- Web Presence Builder
For Plesk 12.x and Plesk Onyx edition-based license (for Web Admin, Web Pro or Web Host edition), most of the features and extensions are available in the Extensions catalog:
To add a feature/additional option to the license for earlier versions of Plesk or of old type (Plesk 10.x/11.x or older), contact Plesk Sales team:
Note: it is not possible to upgrade an additional license for an extension. For example, if there is SpamExperts add-on for 1 domain on a Plesk license, it is not possible to buy another add-on for 1- domains with the following error in the Online Store:
PLESK_ERROR: Input error
An error occurred while validating your entries. Please correct the data in the highlighted fields below.
To replace already existing additional license with another one for the same extension, cancel the current additional license and buy a new one.