Game stuck on infinite loading screen but only on Europe Region

Titel says all. We tried all the common fixes. Re-installing. Deleting Blizzard cache files, yada yada. Complete fresh install of the game. Only boots up in one region. Any fixes?

Cheers!

(If it helps. The client only boots in US region, which is the one where she doesn’t primarily play.)

NVM. Found a fix just now. There were still some undeleted cache folders, mb