diff --git a/app/models/site_construct.rb b/app/models/site_construct.rb
index eb89c1e..781e7f3 100644
--- a/app/models/site_construct.rb
+++ b/app/models/site_construct.rb
@@ -120,7 +120,14 @@ class SiteConstruct
       domain_name_str = ((domain_name_str.split(/\s+/) - [default_domain]) + [default_domain]).join(" ")
     end
     if old_server_block.present?   
-      new_server_block = old_server_block.gsub(/(listen\s+)[^;]+/){|ff| "#{$1}#{port_text}"}
+      new_server_block = old_server_block.gsub('\n',"\n").gsub(/(listen\s+)[^;]+/){|ff| "#{$1}#{port_text}"}
+      if port_text == "80"
+        new_server_block = new_server_block.gsub(/^.*#\s*managed by Certbot(\n|$)/,'')
+      else
+        if self.site_cert && !(self.site_cert.is_certbot)
+          new_server_block = new_server_block.gsub(/#\s*managed by Certbot/,'')
+        end
+      end
       new_server_block = new_server_block.gsub(/(server_name\s+)[^;]+/m){|ff| "#{$1}#{domain_name_str}"}
       new_server_block = new_server_block.gsub(/\s*ssl_certificate[^;]+;/,'')
       level_2_block = parse_nginx_text_to_server_blocks(old_server_block,true,2)
@@ -199,11 +206,19 @@ class SiteConstruct
   end
   def cert_file_remote_store_path
     site_cert = self.site_cert
-    "#{self.full_site_path}/ssl_certs/#{site_cert.id}/#{site_cert["cert_file"]}"
+    if site_cert.source_paths.present? && site_cert.source_paths.count == 2
+      site_cert.source_paths[0]
+    else
+      "#{self.full_site_path}/ssl_certs/#{site_cert.id}/#{site_cert["cert_file"]}"
+    end
   end
   def private_key_remote_store_path
     site_cert = self.site_cert
-    "#{self.full_site_path}/ssl_certs/#{site_cert.id}/#{site_cert["private_key"]}"
+    if site_cert.source_paths.present? && site_cert.source_paths.count == 2
+      site_cert.source_paths[1]
+    else
+      "#{self.full_site_path}/ssl_certs/#{site_cert.id}/#{site_cert["private_key"]}"
+    end
   end
   def get_path
     return self.path.to_s.gsub(" ","\\ ")
diff --git a/app/views/admin/site_panel/_server_manager_index.html.erb b/app/views/admin/site_panel/_server_manager_index.html.erb
index a153424..b1a34b9 100644
--- a/app/views/admin/site_panel/_server_manager_index.html.erb
+++ b/app/views/admin/site_panel/_server_manager_index.html.erb
@@ -20,6 +20,9 @@
   ul.no_list_style li label {
     font-weight: bold;
   }
+  #info_texts{
+    white-space: pre;
+  }
 </style>
 <table class="table main-list default footable-loaded">
   <thead>
@@ -63,7 +66,7 @@
           <a class="btn btn-primary update_nginx_settings" href="#" data-key="<%=site_server.server_name%>" style="background: blueviolet;"><%=t("client_management.update_nginx_settings")%></a>
           <% end %>
           <a class="btn btn-primary" href = "<%= admin_site_panel_edit_server_info_path+"?id=#{site_server.id.to_s}" %>"><%=t(:edit)%></a>
-          <a class="btn btn-primary" href = "#" onclick="if(window.confirm('Do you really want to delete <%=site_server.server_name%>?')) { window.location.href = '<%= admin_site_panel_edit_server_info_path+"?id=#{site_server.id.to_s}&type=delete" %>';}"><%=t(:remove)%></a>
+          <a class="btn btn-danger" href = "#" onclick="if(window.confirm('Do you really want to delete <%=site_server.server_name%>?')) { window.location.href = '<%= admin_site_panel_edit_server_info_path+"?id=#{site_server.id.to_s}&type=delete" %>';}"><%=t(:remove)%></a>
           <a class="btn btn-primary" href = "<%= admin_site_panel_sites_list_path+"?server_name=#{site_server.server_name}" %>"><%= t('client_management.see_sites') %></a>
           <a class="btn btn-primary detect_sites" href="#" data-key="<%=site_server.server_name%>">Detect sites</a>
         </td>
@@ -100,10 +103,10 @@
         })
         built_in_commands += "</ul></div>"
         $("#main-wrap").before("<div id='exec-commands-dialog-confirm' title='Commands to Exec'>"+
-          "<div style='clear:both;'></div><div id='server_names_block'></div>"+
-          built_in_commands+
-          "<div style=\"display: none;\" id=\"super_manager_div\"><input type=\"text\" placeholder=\"account\" name=\"account\"><br><input type=\"password\" placeholder=\"password\" name=\"password\"></div>"+"<textarea style='height: 200px;width: 100%;' id='commands_area'></textarea>"+
-          "</div>");
+                      "<div style='clear:both;'></div><div id='server_names_block'></div>"+
+                      built_in_commands+
+                      "<div style=\"display: none;\" id=\"super_manager_div\"><input type=\"text\" placeholder=\"account\" name=\"account\"><br><input type=\"password\" placeholder=\"password\" name=\"password\"></div>"+"<textarea style='height: 200px;width: 100%;' id='commands_area'></textarea>"+
+                      "</div>");
       };
       $( "#exec-commands-dialog-confirm" ).dialog({
         resizable: true,
@@ -151,7 +154,7 @@
           var infos = request.responseJSON.infos;
           var status = request.responseJSON.status;
           if($("#info_texts").length == 0)
-            return infos.join("<br>")
+            return infos.join("\n")
           else{
             if(status == "")
               var status_text = "not yet create";
@@ -160,7 +163,7 @@
             if(!status_text){
               status_text = "<span style=\"color: skyblue;\">"+status+"</span>";
             }
-            $("#info_texts").html(status_text+"<div style='clear:both;'></div>"+infos.join("<br>"));
+            $("#info_texts").html(status_text+"<div style='clear:both;'></div>"+infos.join("\n"));
             msg_end.scrollIntoView();
             timeout_id = window.setTimeout(see_infos(key),1000);
           }
diff --git a/app/views/admin/site_panel/_sites_list_table.html.erb b/app/views/admin/site_panel/_sites_list_table.html.erb
index cc7ea94..95addfc 100644
--- a/app/views/admin/site_panel/_sites_list_table.html.erb
+++ b/app/views/admin/site_panel/_sites_list_table.html.erb
@@ -5,6 +5,9 @@
   ul.no_list_style li label {
     font-weight: bold;
   }
+  #info_texts{
+    white-space: pre;
+  }
 </style>
 <table class="table main-list default footable-loaded">
   <thead>
@@ -106,9 +109,9 @@
           var infos = request.responseJSON.infos;
           var status = request.responseJSON.status;
           if($("#info_texts").length == 0)
-            return infos.join("<br>")
+            return infos.join("\n")
           else{
-            $("#info_texts").html(infos.join("<br>"));
+            $("#info_texts").html(infos.join("\n"));
             if(status == "")
               var status_text = "not yet create";
             else
diff --git a/lib/tasks/change_site_cert.rake b/lib/tasks/change_site_cert.rake
index 147890c..3a6fab6 100644
--- a/lib/tasks/change_site_cert.rake
+++ b/lib/tasks/change_site_cert.rake
@@ -105,13 +105,23 @@ namespace :create_site do
                 auto_update_infos("Installing Cert on #{valid_domain_names.join(" , ")}")
                 cert_file_content = [(@site_cert.cert_file.file.read.strip rescue ""),(@site_cert.ca_bundle.file.read.strip rescue "")].join("\n").strip
                 private_key_content = @site_cert.private_key.file.read
-                cert_file_store_path = @site_construct.cert_file_remote_store_path
-                exec_ssh_command_by_sudo(ssh,"mkdir -p #{File.dirname(cert_file_store_path)}")
-                exec_command_by_user(ssh,"x='#{cert_file_content}'; echo '#{@password}' | sudo -S sh -c \"echo '$x' > #{cert_file_store_path}\"")
-                private_key_store_path = @site_construct.private_key_remote_store_path
-                exec_ssh_command_by_sudo(ssh,"mkdir -p #{File.dirname(private_key_store_path)}")
-                exec_command_by_user(ssh,"x='#{private_key_content}'; echo '#{@password}' | sudo -S sh -c \"echo '$x' > #{private_key_store_path}\"")
-                auto_update_infos("Finish copy.")
+                if is_certbot && @site_cert.source_paths.present? && @site_cert.source_paths.count == 2
+                  source_paths = @site_cert.source_paths
+                  is_exist = exec_command_by_user(ssh, "echo '#{@password}'|sudo -S bash -c 'if [ -e \"#{source_paths[0]}\" ] && [ -e \"#{source_paths[1]}\" ] ; then echo 1; else echo 0; fi'").strip() == "1"
+                else
+                  is_exist = false
+                end
+                if is_exist
+                  auto_update_infos("Cert already exist.")
+                else
+                  cert_file_store_path = @site_construct.cert_file_remote_store_path
+                  exec_ssh_command_by_sudo(ssh,"mkdir -p #{File.dirname(cert_file_store_path)}")
+                  exec_command_by_user(ssh,"x='#{cert_file_content}'; echo '#{@password}' | sudo -S sh -c \"echo '$x' > #{cert_file_store_path}\"")
+                  private_key_store_path = @site_construct.private_key_remote_store_path
+                  exec_ssh_command_by_sudo(ssh,"mkdir -p #{File.dirname(private_key_store_path)}")
+                  exec_command_by_user(ssh,"x='#{private_key_content}'; echo '#{@password}' | sudo -S sh -c \"echo '$x' > #{private_key_store_path}\"")
+                  auto_update_infos("Finish copy.")
+                end
                 auto_update_infos("Setting Cert...")
                 nginx_file_content = exec_command_by_user(ssh,"cat #{@site_construct.nginx_file}")
                 all_ports = (@site_construct.port + ["443"]).uniq