That's the old Thomson router (now Technicolour)
It's a basic router, you don't need to set anything on the Pi other than enable VNC on raspi-config and use VNC viewer, see here https://www.raspberrypi.org/documentati ... /README.md
Honestly, start fresh again as any alteration trying to make it work may be making it worse.
Do nothing other than connect to the network.
Ethernet, just stick it in
WiFi just do what you normally do.
(WHICH are you using?)
I can only think this is if this is WiFi you may be connecting to a Guest account the routers sometimes have (the newer Technicolour do) and somehow you managed to work across the IP range.
Anyway, download FING it gives a nice way to scan what your computer can see on the network https://www.fing.io/download-free-ip-sc ... ndows-osx/
If you have a mobile phone garb the app and it even easier.
You IP address will not stay the same all the time, you can tell the router to keep its IP address. You don't alter anything on the Pi.
Once you have a clean Pi install, have it connected to the network and vnc enabled.
Answer pcbobs questions.
Mention if it is WiFi or Ethernet front he Pi.
If you have a WiFi extender and are connecting to that?
Take pictures if you like