You can certainly use CashApp with your Sable account!
To add funds to CashApp and cash out instantly
Please go to your linked bank accounts tab in cash app and choose to link a bank using your debit card. Please enter your Sable virtual or physical debit card number, the appropriate CVV code and expiry date for your card as well as the zip code for your address on file with Sable. Once linked, you can start moving funds to and from your CashApp immediately.
Please note, your Sable card has to be in the active state when you are trying to link it to CashApp otherwise you will get the "card is invalid" error message. You can activate your Sable cards in the cards tab of the Sable app.
To CashOut via Bank Account using the standard transfer method
1) Open CashApp and choose CashOut and hit standard
2) Please enter your email you use to login to Sable and your password.
3) Complete the 2 factor authentication using the email verification option provided to you
4) Confirm your account information and balance to complete the linking