Apple Card as Payment: I had to get my Apple Card virtual # changed. It has now been changed. I am getting an Apple Music monthly charge repeatedly declined. I'm flustered. Goldman Sachs problem or Apple problem?

Apple Music has my current and correct virtual card number, per my online check. They submit the monthly billing and GS keeps declining it. I'm afraid to bring this up to GS as they'll say we need to toss the virtual card number in favor of a new one. But there's nothing wrong with the virtual card number. It's correct in the Apple Music system yet when they bill my card, it's declined. Seems that even though the Apple Music system shows my current and correct virtual number in their system, they must be forwarding an old virtual card number to GS. HELP! I don't know how to fix this mess. Thank you.