I've tried airplane mode, so that doesn't effect things.

I DID change the default 192.168.8.1 to 192.168.1.2 . As mentioned, I HAD TO for it to work.

So my question is what happens when there is this subnet discrepancy and why does it still work. Even if internet still does work, will there be other issues that crop up?

"LAN subnet is in conflict with the WAN subnet, Please Change Lan Subnet to a different address’’.