I checked your modem from this end and it's reporting back poor signal levels. I'd suggest checking all coax cabling for any obvious problems, bypassing any splitters you can, or testing the modem at a different outlet to see if that helps. Otherwise a technician may need to come out and troubleshoot further.
The signal levels are still not at the range we like seeing them. If you have already bypassed the splitter next step would be to schedule a technician out. Please email my team your full name, address, and a link to this thread, send it to email@example.com.