Following are the steps you need to take to reopen a closed Cash App account:

1. Open the Cash App on your phone 
2. Click on the Profile icon, and scroll down Sign-Out
3. You will be redirected to the Sign In page once you sign out of the current account.
4. Click on the Sign-up option to create a new Cash App account
5. For registration, enter a new email ID or number to start the sign-up process 
6. Verify the email ID or phone number that you provided 
7. Once the registration is complete, you can easily log into your account.