You can go into Total Privacy Mode, which shows a 12-number PayID instead of your PayName.
To use this feature:
- Tap Settings, the three dots on the bottom right of the banq app.
- Tap on the Space of the account that you'd like to make private.
- On the next screen you'll see a toggle for "Total Privacy Mode." Tap this, and your payID will be shown instead of your PayName whenever you pay or get paid.