- It is required to upgrade the version of the license, which was purchased in Plesk Online Store account.
- It is required to upgrade the number of sites/domains/accounts for the license that was purchased in Plesk Online Store account.
If your license was not upgraded during Plesk upgrade, or you need to install a license on a different server with a higher version of Plesk , you can upgrade the version of your license manually. See this article for more details:
#213374449: Can I upgrade my older version Plesk license to Plesk Onyx?
In case you need to upgrade a license to a different edition or number of domains, see information here:
#213934825: How to upgrade or downgrade a license between Plesk editions
For any questions, contact Plesk Sales team.