Chess.com app (iPhone/Android) is not logging-in on the Fizz wifi. It works over VPN or LTE when I disconnect wifi connection. Any idea what's the issue?
Is it blocked or not found?
If the domain is unresolved, it could be a DNS setting. If you know how to change it, try it. E.g. https://gadgets.ndtv.com/mobiles/features/how-to-change-dns-server-on-android-1672117
A block could be :