SAFARI CAN NOT OPEN THE PAGE BECAUSE THE SERVER CAN NOT BE FOUND. I need to unplud the router to fix

> I am getting SAFARI CAN NOT OPEN THE PAGE BECAUSE THE SERVER CAN NOT
> BE FOUND.

   From Safari on what?  I normally get "Safari Can't Find the Server"
on my Mac, when there's a DNS problem.  Other browsers?

   When Safari has problems, do other services also have problems?

   Have you looked at the DNS configuration on your computer/device, and
on your router?

> [...] I need to unplud the router to fix ?

   Are you asking or telling?

> Model: RBR20|Orbi AC2200 Tri-band WiFi Router

   Firmware version?  Connected to what?