What does Plesk consider Fraudulent License
Licenses installed on more than one physical or virtual server at once are marked as fraudulent.
How does the process work?
Plesk does a license check once every month in which Openprovider receives a list of licenses that are considered fraudulent.
If your license gets marked as fraudulent there are 3 things you can do.
1) Create new individual license keys for each instance of Plesk used
2) Terminate fraudulent licenses
3) Bind a license to specific IP via Control Panel interface on license modification page
Licenses that have not been corrected within 30 days after you received the notification will automatically be terminated by Plesk for violation of Plesk EULA.