From github: https://github.com/mozilla-mobile/focus-android/issues/7608.

Steps to reproduce

1. Navigate to: https://www.balikesirulasim.com.tr/.
2. Observe the result.

Expected behavior

The page loads.

Actual behavior

"Secure connection failed" message is displayed:

Device information

• Android device: Samsung A51 (A11), Google Pixel 3 (A12)
• Focus version: Firefox Fenix Nightly 106.0a1 (2015902251-🦎106.0a1-20220904093956🦎)

Notes:

1. Reproducible regardless of the status of ETP.
2. Reproducible on the latest build of Firefox Focus Nightly and Release.
3. Works as expected using Firefox Fenix Nightly, both normal and private mode.
4. According to SSL Labs:
   

Change performed by the Move to Bugzilla add-on.

This is happening for me also on Fenix and on GVE no matter the private mode status.
It's interesting that there is no issue on Desktop.

Broken trust chain. I expect this is the preload intermediates bug.

https://www.sslshopper.com/ssl-checker.html#hostname=www.balikesirulasim.com.tr