Hi! I see you're having trouble accessing xbet.ag on your iPhone browsers due to a website security warning. Let's get this sorted out together.

To better assist, could you please tell me which browser(s) on your iPhone you are using? For example, Safari, Chrome, or others? Also, are you seeing a specific message like "website isn't secure" or "connection not private"?

Meanwhile, here are some common steps that might help resolve this issue:

1. Check Date & Time Settings: Make sure your iPhone’s date and time are correct and set to automatic. Incorrect settings can cause security certificate errors.

2. Clear Browser Cache: Sometimes cached data causes such issues.
- For Safari: Go to Settings > Safari > Clear History and Website Data.
- For Chrome: Open Chrome, go to Settings > Privacy > Clear Browsing Data.

3. Update Your iOS and Browsers: Ensure your iPhone OS and browsers are up to date, as updates often fix certificate compatibility issues.

4. Try Opening in Private/Incognito Mode: This disables extensions and some data that might cause blockages.

5. Network Restrictions: Sometimes certain Wi-Fi networks or VPNs cause certificate warnings. Try switching to a different Wi-Fi network or cellular data.

6. Check SSL Certificate: Xbet.ag reportedly has full SSL site security, so the warning might be on your device side or network1.

If this does not resolve the problem, please provide the exact error message, and let me know which browsers you've tried so I can dig deeper for a solution!