I installed it again to see what you mean and it’s not clear at any moment. I cannot see which features are free and which ones are paid in the admin panel, so cannot choose to configure them or not.
Additionally, when I sync to Google Calendar, it brings me to a “Casper-Hoeger” account which, obviously, is not mine and seems that my calendar is attached to someone else.
The language that appears for the client is different than the one in admin.
So, I don’t doubt that it cluld be a good plugin, but my experience is that it’s confusing and misleading about the features.
I would be happy to change my review if I find it clear and easier in the future. At this point, I’m removing it and finding a different solution.
Thank you