Hi there! I see you're having a connection problem with the Y/n app even though your WiFi is working fine. Could you tell me a bit more? For example, are you getting any error messages in the app? Is it failing to load data, or is it not connecting at all? Also, do other apps on your iPhone have internet access over WiFi without problems?

This info will help me guide you better. Meanwhile, here are some initial steps we can try together to troubleshoot the Y/n app connection:

1. Force close and reopen the app: Sometimes the app may need a fresh start. Swipe up from the bottom (or double press Home) and swipe the Y/n app off the screen to close it, then reopen.

2. Check app permissions: Go to Settings > Y/n app and make sure it has permission to use WiFi/Data.

3. Restart your iPhone: Power it off for about 30 seconds and turn it back on. This refreshes network connections.

4. Forget and reconnect to WiFi: In Settings > WiFi, tap your network name, select “Forget This Network,” then reconnect by entering your password again.

5. Update the app and iOS: Ensure both iOS (18.2.1 on your iPhone) and the Y/n app are up to date from the App Store.

If none of these help, sometimes Y/n app connection issues can be related to WiFi frequency bands (e.g., apps working only on 2.4 GHz instead of 5 GHz). You might check if your router offers a 2.4 GHz network and try connecting your iPhone to that one.

Let me know what you find or if you’ve already tried any of these steps! We can dig deeper from there.