PS4 Lan cable not connected issue with RE505X
So, this all started about 2 weeks ago. As per usual I started up my PS4 and opened up Netflix. About 20 minutes in, "Lan cable not connected" pops up. This message pops up 2-4 time in 30 seconds and then everything appears to work, but repeats after 15-90 minutes. This makes me unable to play online games reliably. I have tried a factory reset on the extender, rebuilding the PS4 database, switching the cable, switching the network type to WLAN (when I did this the issue happened again but only replaced by "No internet connection" or something to that extent) and moving the router closer to the modem, but nothing works. The PS4 works perfectly if it's connected to the modem itself. Is there any advice you could give me, or is the product broken?