Epson Stylus NX530 network connection problems

I have an Epson Stylus NX530 printer with Airprint (Wifi capabilities) but it won't connect to my router.
I have had it connected to this router before, but it has spent some time unplugged and now won't connect. It recognizes the network but fails when I try to connect.
I have tried push button set up and set up wizard (entering the password after selecting network). Neither will work. It has the network and password still stored from when it successfully connected before, but the connection status test fails too.
I have reset the printer, reset the router, re-entered the password a few time, etc. Nothing works. I am pulling my hair out trying to fix it. Has anyone had this problem before? How did you fix it?
Asked Apr 06, 2015

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