Hello.
1. add a new task (web or android)
2. set a start time for the task
3. look at the Gcal - sync is ok
4. change the start time in Gcal (edit or drag)
5. press "sync from Gcal", and "sync" (refresh)
6. look at the app - start time doesn't sync :(

The same situation with all tasks created in the app (web or android)
Tasks created at the Gcal, and changed at Gcal - sync correctly

It was only one reason for upgrading to PRO. And it doesn't work. Funny