Nighthawk m1

Hi there, 

i need help. All my devices have been blocked from my WiFi because I attempted to connect my wireless printer to my router and did something silly by whitelisting it. So now this means I cannot access WiFi through my router on any of my devices. 

This also means I cannot log in to m1login.net to change / amend it as I have no mobile router network (due to my stupidity)

There is no support number and so I cannot get any help. 

I don’t know what to do as I’m in a catch 22 situation here. 

Anyone?