Troubleshoot and resolve 1013 - Template does not exist errors.
Troubleshoot and resolve Unable to create account in Panel. The field 'username' is required. errors.
Troubleshoot and resolve Unable to find appropriate manager for this version of Panel. errors.
Troubleshoot and resolve issues with the www subdomain on Plesk.
Single Sign-on allows trusted applications and third parties to log users in to WHMCS automatically, without reauthentication.
Add Sitejet Builder to your products on Plesk servers. WHMCS 8.10 and later includes full automation support for Sitejet Builder.
Configure the system cron job as part of the WHMCS installation process and make certain that its daily automation tasks always run successfully.