Hello,
I have just migrated a server from a staging environment (staging.example.com) to a live environment (example.com). I am having what appears to be the same issue as Valid License Not Validating. Reinstalling Pro did not correct the issue.
In that thread, it appears that there was an issue with the database server, but further details are in a private note. I am not finding any errors in phpMyAdmin (either with the server or when checking the database itself), and there are other pro-based sites on that server without issue. Is it possible to get further details on the resolution?