XER10 lose service every 30 minutes

I checked my logs on my XER10 modem and since March 18, we have been losing signal all LAN and Wireless devices in almost exact 30 minute intervals. So four days of 30 minute interruptions with the only variance being when I power cycled both the ONT and XER10, which did not resolve the issue. I called customer service they said they "sent a signal" to my modem, but that did not resolve anything and he did not appear willing to assist any more, even though it happened again during our phone call and after that alleged "signal" was sent which was extremely frustrating and unhelpful. A small portion of the log can be seen below, but there are over 50 pages of it, all with that same 30 minute interval. Before the 18th, services was virtually flawless.