Hi GerryS,
Thanks for posting and welcome to the community! I pulled up your account and am also unable to communicate with your modem, so let try replacing it first to see if that gets you back online.
Please expect a replacement modem soon. You can return your old modem in the box the replacement comes in; there will be a return shipping label in the outer pouch for your convenience.
Let me know how the new modem works out for you.
Thanks,
Liz