Need some help with a DOCSIS 3.1 cable modem

[MerryHolidays]

5. I am going to pick up the Arris at a local store in an hour or so

My family will yell at me (!) if the internet is down too long, so I am going to try to do the switchover this afternoon when, hopefully, no one is around.

And yes, renting the modem from Xfinity is a good idea. Xfinity sort of washes their hands on problems when you're not using their modem. That being said, they are helpful. While they claim they are not the problem, I do wonder. Getting the Xfinity modem for a bit would force them to work on the issue if it's on their end.

If the Arris is also a bust, that's my next step.

Thank you!