Unable to update apps due to payment issue on Apple Account

I am experiencing issues with updating my apps. Recently, a message popped up, and I haven’t been able to resolve it. I haven't made any purchases since the beginning of this month, other than buying additional storage. I cannot identify any other purchases that could be causing this problem. When I attempt to pay for this mysterious charge, I’m unable to complete the transaction. I've checked my account to see if I own anything, but I found nothing. I've also tried entering my card information again, signing out of my account, and still, nothing has worked. I would really like to be able to update my apps.

[Re-Titled by Moderator]