Unable to access iOS app

Hi there

I remotely access my Home Assistant instant by the Cloudflared add-in.

For added security I use Cloudflare Zero Trust with a one time PIN. My Zero Trust settings limit access to users in two countries and email addresses. (In addition, my HA instant log-in is protected by a long password and two factor authentication).

The HA iOS app has been working for a while. I was tinkering with the Cloudflare Zero Trust settings (mainly to limit geography and email addresses for the one time PIN). Since then - and while I can enter my Cloudflare one time PIN, and get access to the HA log in page in the iOS app - when I enter the final login details I get the following error in the iOS app:

I can still remotely access my HA through a browser.

Any suggestions?

Thank you

E