Cash App payment can be use if you are located in US or UK. Add your Cash App username to Take App to let customer pay.

How to add Cash App payment method

Go to Admin > Settings > Payments and click Add payment method
Choose payment with "Cash App", Register your Cash App username (e.g. https://cash.app/$username) then click save.
Make a test order and check if your Cash App QR working well.

Cash App Payment