I recently created a Sandbox account and successfully added an Apple Pay test MasterCard to the sandbox Wallet to run a test.
Yesterday, I created a different account and tried to add a MasterCard on another device, but I received a "Card device limit" error.
I then deleted the card from the original device (where it had been successfully added) and tried to re-add it, but this device also failed.
I was able to confirm that a JCB card can be added, but I need to test with MasterCard. What should I do to resolve this?