@Szuter
Hi,
Is the model number RE450?
Are both 2.4ghz and 5ghz not detected by the PS4?
When did this issues start and did they work well before?
By the way, what is the model number of the main router and have you tried to change the wireless channel on the main router, like channel 11 for 2.4ghz, channel 40 for 5ghz?
Thank you very much and wait for your reply.