WCO- App doesn't load without service making Travel Mode useless

This weekend I brought my WCO with me out to coral pink dunes in Utah. There is absolutely no cell service there, and I launched the app to put the cam in travel mode, but the app just wouldn’t bypass the app opening screen. (Green gradient with Wyze logo in center) I tried multiple times, restarting my Samsung A51 and the WCO. At one point It loaded into the devices home screen, and when I clicked the WCO on the page, it said offline and the app crashed. Am I doing something wrong or does the app not work without service, when it has a feature designed to be used without service.