Hi @carinaa,
Unfortunately, the DB login credentials don’t work, but regardless, object and database cache aren’t viewable through phpMyAdmin, perhaps you can provide your Kinsta dashboard login credentials? I read about Kinsta cache that it handles them automatically, perhaps I can find something there.
One of the clue is, it works on newly created sites, and the difference from old and new site is cache, the new one has yet to generate the cache. I’m not saying you haven’t disabled them, but I like to test the settings first as sometimes, turning them off may still serve caches. Their docs show Kinsta Cache plugin too but your current site doesn’t have it, I need to confirm how the cache is managed by your host environment.
Thanks!