You have an obvious typo there.
The device has IP from the 192.168.1.x subnet, but you have said that the gateway would be on 192.168.2.1 subnet, while at the same time setting subnet netmask as 255.255.255.0 meaning that 192.168.2.x is unreachable and effectively you have no gateway. (And DNS says 192.168.1.1)
Sounds right if you want to follow the "dumb AP" advice.
Assuming that your main router is 192.168.1.1 and you use LAN-LAN cable ebtween the two routers, you need to set here
- IP 192.168.1.11 (like now)
- netmask 255.255.255.0 (like now)
- gateway 192.168.1.1 (FIX THIS)
- dns 192.168.1.1 (like now)
Dumb AP advice:
- https://openwrt.org/docs/guide-user/network/wifi/dumbap
- Not accessible after disabling DHCP - #5 by hnyman
But like frollic says, there is some confusion, as you mention mobile tethering and two routers...