Please note that some add-ons are not activated automatically after purchase; to solve this problem, you need to contact the author of the add-on in personal messages (to do this, go to the page of the purchased add-on, click on the author's nickname to go to his profile, and select the "Private messages" button (Important: for a speedy response from the author, we recommend that you indicate the subject of the message.) and describe to him the current situation; if necessary, you will need to indicate the email address and domain for which you need to provide a license.