@Luca9292 

Hi, thanks for your time and patience.

Did you mean the RE and signal lights on the 850RE normally need 15mins to come back on and then internet restored;

 or if you try to scan the host network and did the setup again, it might need 15mins before the host network showed up?

May I know the model number of your home router?

Have you tried to change the wireless channel on the home router, like channel 11 for 2.4ghz ; and reserve the IP address of the 850RE on the main router?

Thank you very much and wait for your reply.