I need to purchase my recreation however it at all times seems the ”Oops. Unsure what occurred there, strive once more later“ display screen.

I've been attempting to purchase a recreation for two days with my Microsoft account cash however when i click on on " add a technique to pay" after which "Microsoft account" it seems that “Oops. Unsure what occurred there. Please strive once more later.“ Display screen. I've tried every little thing like utilizing one other machine to attempt to purchase the sport, and even exhausting reset however nothing works. And idk why i can't comunicate with the assist crew. somene pls assist