Spectrum Says the netduma router isnt supported

[slippas]

1 hour ago, Netduma Fraser said:

Could you try using google chrome please?

Yes, just tried again with chrome with no luck in private browsing either 

[Netduma Fraser]

Unplug the R2 from the modem so only the PC and power are connected to the R2 - you won't have internet or the possibility of getting it but are you able to access the router then?