If you think to create multiple accounts on Cash app, so before going to start this process, you have to log out your current account from Square app on your device. Once you successfully log out, then either sign in Square app account via creating a new account here or sign in with the existing account. Now, you can use it to get money back from Cash app. https://www.cashappcustomersupport.com/blog/get-my-money-back-from-cash-app/