Hi there, @user21959 
Glad to say that the Schema markup is built in our Event Calendar app. If you check your website using the rich results test, you’ll see that all the required fields are filled:
Only optional fields are not being filled, and they are not considered essential by Google or other validators. However, we agree that it would be great to fill all fields in the markup, and this idea is already on the Wishlist. Feel free to upvote it here 
- Fill in all fields for Event Calendar markup