Air Print problem following wifi router reset

Thanks for the reply.

The setup instructions did not advise on how to handle a second router,so I just set them both up with the same ID and everything worked fine for 3 years, until I had to reset them recently.  When I look at the devices recognized by each router, via the nighthawk app, the printers don't register on either.  This is because, with an Ethernet cable attached, they don't transmit a wireless signal.  But, somehow, AirPrint was able to use the wifi to communicate with those printers on the network, but not after the router reset.  I've tried to update the router firmware, which I suspect is the problem, but it fails through the nighthawk app and the netgear site says that free support for for these routers expired.  So, do I spend $$$ with netgear to try to resolve the problem on routers that are nearly 5 years old, or spend $200 for comparable new ones?  Unless I find an easy fix that's free, i

l probably just go new.  Thanks again for trying to help.