I needed to update my payment method, since my previous credit card was approaching it’s expiration date.
I tried editing my payment card to change to a new one, but nothing happened – the
Confirm button changed to
... to indicate something was happening, but it wasn’t.
The paypal button showed up occassionally, and when I tried that, it didn’t worth neither.
The only way it did work, was to add a backup payment method, and then change this to the primary method. You can follow instructions on this page: Updating Cloudflare billing information – Cloudflare Help Center
Hope this helps anyone having the same issue.