Paying with a card:

- find your wallet and pull out your physical card (similar for digital; however, some payment processors don't allow pasting, lol)

- enter your quite long details in 3 different fields

- 2fa page loading; no it doesn't, close your VPN and try again (or 2fa notification arrived but you are logged out. Please login to the mobile app again)

- refresh, start from scratch

- 2fa page loaded, input the 6-digit code

- success!

Paying with LN:

- open wallet app on the phone

- scan the qr code

- tap pay, done!