If you think about it, can you have 2 cash app accounts? So, whether you like it or not, the point is that it is not possible to add two or more debit cards. The Cash app accepts debit card registration or you can call your bank account when making a payment. However, many other payments such as PayPal, Amazon Pay, and Google Pay allow users to sign in to multiple bank accounts. However, you can contact us on our website for further assistance.