Per our Scope of Support / Terms, we don’t guarantee that our stuff will work with all the other plugins and themes out there.
That being said, we know ACF is a very popular plugin and I don’t know of any known conflicts at this time.
So, to be clear, if ACF is deactivated, our plugins work just fine, correct?
If yes… if only ACF and none of its add-ons are active, does everything work?
If yes… can you determine which ACF add-on might be causing the issue?
Or, with ACF and all its add-ons active, do you have some custom ACF code that, if removed, makes everything work again?