I come across this, which maybe of help given they are VW group cars –
Ohme is rubbish at working with audi’s api too and will intermittently work or not at random.
Ohme supports reply was: “As an Ohme Labs feature, communication directly through your vehicle (via API) is still in development. As a result, it may not work as intended from time to time.
For the moment you would need to disconnect the API link (by clicking Continue Without Account after selecting your car make) and then adjust your charge schedule slightly to ‘add’ a certain amount of charge rather than meeting a ‘target’. “