Added Win 10 - Language Packs - Paint 3D & Calculator - Stuck on added language?

Would anyone know how to correct this? I've added several language packs to Win 10 (desktop) and now my 'Calculator' and 'Paint 3D' are 'stuck' on one of the added languages? I have tried, rebooting, going to >settings >time and language >language... and checked, 'Windows Display Language' is correct (English)... and that the order of 'Preferred Languages' is correct... yet these 2 apps continue to display in an added language rather than English? Many thanks in advance... if someone knows how to fix this annoying problem!