No fingerprint login in the app

Using the app with Samsung Note 10+ 5g and Android 10, One UI version 2.1. I’m sure when I started using Curve with Samsung Pay that when logging into the app it used to ask for my fingerprint to login. Now it asks for my pass code. How can I change it back to fingerprint login. Can’t find it anywhere in the app.

On the account tab, press the profile icon (there is currently a bug that for some users this icon is missing) in the upper right corner:

On the profile page scroll down to ‘Sign in with biometrics’ and toggle the switch.