Just a pointer. Curve Black member with two cards set in Anti-Embarrassement mode. Went to use Curve and it was refused and didn’t default to either of those set in mode. Fortunately had the original card so used it without any problems. Luckily I don’t embarrasse easily!
Incidentally, used Curve the following day, set to the same card and it worked fine.
You may wish to check the functionality of Anti-Embarrassement mode because it certainly didn’t work for me on this occasion.