Some updates have been made as I noticed new functionality. Now you can set a charge timer from the app too. Previously only been possible from the car interface.
I had one issue a few weeks back where I reset the whole system. Not sure if it actually fixed anything or was it just an outage like this.
Wasn't that much of a job to re-do the car settings, the apps and Vivaldi bookmarks etc were the most painful. Apparently you could overcome this as well by creating a specific Vivaldi account. Already lost count of all the different accounts I have by now ...
Apart from that the app has worked without major problems. A few hiccups here and there but were always fixed by a restart or new login to the app.