VPS or Ultra VPS license has reached its limit
You may see an error similar to the following in your license status:
VPS licenses have a 2GB RAM limit and Ultra VPS licenses have an 8GB RAM limit. You cannot use such license on servers that would go over these limits. Web Host Essential licenses and up do not have such these limitations.
For example, in the above error, a VPS license cannot be used on this VPS as it uses 16GBs of RAM, exceeding both the the 2GB VPS license and the 8GB Ultra VPS license. You would need to upgrade the license to a Web Host Essential license or greater for this particular server.