Nighthawk CM2000 modem constant internet disconnects

I don't have any splitters it's a direct connection. The isp checked the signals earlier today and said it all looks perfect. I'm not so sure about the wiring they went around the apartment checking all the wiring in the plugs and by the box stating it looked good too and said it's a good quality coax cable but didn't I'm not sure which kind exactly it is. I powered the modem off and on as well, the logs did not change. I thought I posted what was the modem connection page in the .pdf attached at the beginning of my post. If that's not it I'm not quite sure what page you're referring to. I don't have much knowledge in this, sorry for the confusion. I have been on the phone with the isp several times a week for months and they keep saying everything looks great on their end and there really isn't anything else they could do so they referred me to here.