Hi @sophieo21646782,
I'm sorry you are having trouble. There could be a few reasons that this error may be occurring. Can you try a couple of things and let me know if this resolves the error? Sign into https://account.adobe.com and confirm that payment method listed under your account is update to date. This payment method may be associated with any of your active subscriptions.
Using the Adobe ID you are using here on the forum I see that you have an apostrophe in your name. When you edit the payment method can you try removing that apostrophe. We did have an issue some time ago where apostrophes and some other symbols in payment information were not handled correctly on the Adobe Stock site. I thought this was resolved but perhaps not.
Please try again and post your results here. Let me know if you had to change anything in your payment method as it will help troubleshoot this issue.
EBQ