Can't connect WireGuard (Flint + App)

Not sure what I’m doing wrong.

Created WireGuard server on Flint, default ip and port.
Added user.
Scanned qr code through WireGuard app on iPhone.

No internet.

How would I go about troubleshooting this? Feel like I’ve tried everything and not sure where I’m even experiencing a problem because 0 error messages. Lost and confused.

To make sure your network has a public IP, and to check your network topology , then to check if the wireguard server is working properly.