Steps taken:
1. Deselected folders using selective sync feature
2. observe that folders are gone from main sync folder
3. observe that local storage is not being recovered
4. found out that the space is still being hogged in a hidden folder idsync.cache
5. advised by chat support not to delete this as 'Its a folder for temporary files when sync is going on.' - seems completely irrelevant to me when all i want to know is how to recover my lost disk space.
What do I do?