How to connect HP 3520 printer to TP-LINK WR-720N router?

Question

WiFi

Everything worked fine before, but today the printer suddenly disconnected from wi-fi. I tried to connect according to the manuals via WPS, both by the button and by the PIN code. The result is always the same - the printer says "WPS Timeout". Tried to solve the problem like this:

• Restart printer and router
  
• Reset router to factory settings
  
• Updated the router to the latest firmware
  

Answer 1

The issue was resolved: I printed out my network on the printer for some reason, I didn’t see it, I went into the router, I had an auto-selection of the channel there (the 10th was automatically selected for some reason). Switched to another channel and everything worked.