Problems printing to USB printer, airprint and Win 10 laptop

I've had Orbi running a couple weeks.  A couple of days ago, I hooked up my old Samsung ML-1740 to the router USB port.  Everything worked great.  I could print from my Windows 10 laptop and had airprint working so I could print from my iPhone. 

Today I was looking at what apps I had opened and saw a little line about airprint on the bottom of the screen that shows open apps.  I accidentally deleted that little line and since then I haven't been able to get it to work no matter what I do.  When I try to print, my iPhone says the printer is offline. 

I also seem to have a problem with the laptop automatically connecting to the printer and automatically disconnecting when appropriate, i.e., it won't print unless I manually connect, print, then manually disconnect.  I've uninstalled and reinstalled everything.  I reset my router to factory settings.  Nothing seems to work. When I look at the printers and scanners from my laptop it shows the printer as offline unless I connect manually, and previously it would connect automatically.

Netgear tech support says it is an iphone problem and not a router problem.  I checked for firmware updates and it says I'm current at 2.0.0.74.  I can't understand why I can follow the Netgear instructions the same way and get the desired result a couple days ago and something completely different today.  Thanks.