My REX54 V2 nighthawk is my primary router. I have another nighthawk router and a northern TP-Link router set as extenders. My primary router has suddenly significantly lost its range and has begun dropping the internet. The extenders continue to work. I've restarted All the routers to no avail. The download speed is good. Any ideas about what might have happened to the primary? It's about 6 months old.
