My 2013 Macbook Air can't find my HPDeskjet 3050 printer. It worked fine before I took the Macbook away for the summer. What's wrong?

My 2013 Macbook Air can't find my HPDeskjet 3054 wireless printer. They worked fine together before I took the MB away from the printer for the summer. I have tried reinstalling the HP software and a bunch of other things that didn't work. The printer shows up as its own wireless network in the list of networks, but then I have to disconnect from my home network and I lose internet connectivity. What's up?