Possible commscope issue

My modem is downstairs, my bedroom cable box has the commscope amp attached.  I unplugged the commscope and box that it's attached to, and my whole system went down - no internet, no cable TV, no phone.  I called the helpdesk and they said I was offline (yes, I am well aware of that).  We've been rebooting the box, rebooting the modem, moving the coax cable, etc. and we can't get anywhere.  They are sending a technician out tomorrow, but I WFH and need internet in the morning.  I've turned my cell phone into a hot spot to try to troubleshoot, but there is no information at all about this.  Can anyone possibly help?  TIA.