Please read this if experiencing payment issues

Dear god is irritating, After 2 days of huslte I think I finally managed to purchase when I just used my brothers credit card, but right after I hit the purchase button it lead to Pagewww.unrealengine./subscription/ and its constantly bringing up the following error: 500 server error and says something about website being updated. So How I am supposed to know if it’s purchased or not? Since I can’t open the next Page. (I can’t check the account balance at the moment)