My modem hasn't checked in since the 12th. I thought it was because my data plan was full, but that reset yesterday and still isn't checking in. My other modem is working fine. I checked it yesterday in person and it was on and seemingly operational, but I couldn't get it to check in when holding down the button... Was hoping it was because the plan was full, but again, it's since reset and not checking in. Is it possible to do a remote/forced check in?