Same issues here too, in Springfield, MO. It reboots several times per day, most often late at night. I can't show logs on my modem because I can't log in, but I can PM you my MAC address.
I've had several reboots every day for the past week or two. I just hestitate to call them because I know the response 'Everything is fine on our end, we'll need to schedule a tech to come out'.
It's like literally the only answer I ever get form calling them.