Zwift synchronizing issues

I often use Planner to plan my workout for the next day(s). Since the new functionality was active, these workouts would automatically be uploaded to Zwift. Already sometime this is not the case anymore. I had to save the planned workout again in planner on the day itself to force it to upload to Zwift.

Yesterday I noticed a new problem. When I save the planned workout Xert does not upload my intended workout, but a (random) Xert workout to Zwift. I do no suceed anymore in uploading my own workouts.