Cred App - How to Delete the Debit card / Credit card from the Cred App ?

1)Can we delete a Debit card (which is added for payment) from Cred App?
2)Can we delete a credit card (which is registered in Cred app) ?

Why do I want to delete the debit card from Cred ?
Safety reason, if the Cred app gets compromised.
Why do I want to delete the Credit card from Cred ?
This would enable us to add the same card in different login and get extra cb50. Also, keep the Cred clean and keep only active ones.