Hi! I understand that after you enter your iPhone password on the O2 Venue App, it logs you out immediately. That definitely isn't the experience we want you to have.

To help you better, could you tell me if this happens every time you try to log in? Also, is it just after entering your iPhone password prompt (like when accessing secure areas of the app), or does it happen during the general login process too?

While I wait for that info, here are some initial steps we can try to fix this:

1. Update the App: Make sure the O2 Venue App is updated to the latest version from the App Store. Sometimes older versions can cause issues with newer iOS versions (you're on iOS 18.6.2, so the latest app compatibility matters).

2. Restart Your iPhone: A simple restart can clear up temporary glitches.

3. Clear App Cache / Force Close App: Double-click the Home/Swipe-Up and swipe the O2 app off the screen to close it. Then reopen it.

4. Check for Conflicting Permissions: Go to your iPhone Settings > The O2 Venue App and make sure all necessary permissions (like Face ID/Touch ID or passcode access) are enabled.

5. Re-login: Log out from the app completely, then log back in, making sure your credentials are correct.

If you've tried these already, please let me know, and we can dig into more advanced troubleshooting, such as checking for account conflicts or reinstalling the app entirely. Also, if you recently changed your iPhone's passcode or Face ID settings, that might be worth mentioning.

Let me know what you've tried or what else you notice!