Had the same issue.. after tinkering with the PCM and the app for a few hours I threw in the towel and called 1-800-PORSCHE. They must have rest something on their end because in an hour the app started working properly again. I would call them …
Happened to me when driving in snowy weather. The sensors got obstructed with snow and could not assist in driving. I could still drive, just couldn’t rely on the sensors and had to rely on my eyes more.. the notification cleared automatically after the snow melted