It was something with the power grid. Wildfires, IIRC. Gabby had no wifi, so dad ordered a pizza.
"In an interview with the New York Post, Joseph urged people to 'focus on finding her. I can't implore that enough. All of the crap afterward will sort itself out. Please find her. I beg you.'
He added that, on August 21, his daughter let him know on FaceTime that they had lost power during a stop in Salt Lake City.
'Everything was good. She had lost power to wherever she was at. She couldn't get on the WiFi for whatever reason,' Petito said."
Dad of Gabby Petito says 'he will do anything to find her' after she vanished on trip with fiance | Daily Mail Online