I hate when that happens. Happened last year to a b8 guy who came to my house to do some vagcom stuff and to log his car. “I will send you the logs” I told him. Only to find blank columns.
Embarrassing.
Happened once with mistro too.
I’m sure you know this but once in a while the data is WAAAAAAAAY down. Have a quick look. I don’t mean after the idling data. Sometimes there is no data for like four hundred rows, then it starts. No idea why.