I've got this strange issue where a WordPress website is fully up to date, has no issues in terms of PHP errors etc
However, the installed plugins are stuck as old versions, and are not showing any available updates, no matter how many 'Check again' I click, cache is cleared, and hard refreshes happen.
Some have told to look in wp-config for a rule that affects cache, but there's nothing in there.
Is there anywhere else I can look, or anything I can do? I literally have no idea why it's happening...