Only Togo channels showing

I turned in my cable box today at xf store. She asked me if I had xf modem because order said I was going to lease one. Nope, I’ve owned an Arris sb8200 for several years. Worked fine with the full channel lineup on xf stream last night. Tonight after my visit to the store, just tvgo channels. Something changed with whatever the store employee put into the system. She did change speed from 500 mbps to 1000 mbps because she said they both cost the same. 
I spent 1+ hours with a patient tech who tried everything. Deleting and reloading apps. Unplugging modem. Unplugging my Netgear Orbi router. Nothing helped. 
I welcome any and all input to solve this conundrum. 
Thanks!