Hi xxx,
Thanks for your reply. I checked our systems and the reason why you can't add this card to your Curve account is that this card has already been added to your previous Curve account.
At the moment a payment card can only be added to one Curve account, and you won't be able to add it to a second account even after the card has been deleted from your first account. This is a known issue our developers are aware of and plan to fix. Just to manage your expectations, we don’t have a timeframe to resolve this issue at the moment. Once we’ve fixed this, we’ll let you know.
We apologise for any inconvenience this has caused. If there's anything else you'd like us to help with, please don't hesitate to get in touch.
Best wishes,
xxxx
Team Curve