have the same error with Gitlab. After I authenticate and get message that it was successfully connected I reload the page and error persists

Of course here is the Finnish and Slovak and UK links. The UK is in slovak as it used to be and then I have the new localizations that should have different text but display the uk text. Here is english US link. I have worded the slovak localisation bit differently to the UK one so I can see which one is used and it seems to be the UK one in Slovak App store as well.

They are indeed the correct link. I will try to contact app store connect support