After changing your router, I recommend reinstalling the printer to reconnect it to the network. Check out our WiFi Installation Guide. Since the push button or pin method did not work, try the "Easy Setup" method instead.
If this didn't work, or if you have any other questions, please feel free to Contact Us!
2/07/2023: New product announcements!EOS R8 EOS R50RF-S55-210mm F5-7.1 IS STMRF24-50mm F4.5-6.3 IS STMRF15-30mm F4.5-6.3 IS STM