OK so here is the story. I have a WiFi-extender plugged in. It has a LAN cable connected to it, and this cable was connected to my PS4. For ages it was working, but about 2 months ago to present, my PS4 says: LAN cable disconnected. Then it reconnects, then loses connection completely.

Here's the thing. For some reason, I can still use the LAN cable on my PC (connected to the WiFi-extender) with no problems whatsoever. I have tried another LAN cable but that was completely wired to the router.

Any tips or solutions would be greatly appreciated.
Thanks