I am now terribly annoyed. Being a good programmer myself I can skim through logs but there is barely any useful information in them. I've tried both on ACD and GDrive. Transcoding is absolutely fine. If I delete an already synced item then it gets deleted on the cloud side too, just like normal. Already synced videos work just fine.
Only problem is that for last 3 days Cloud Synced is JUST... NOT... WORKING... NO MATTER... WHAT... I... DO...!!!
Edit: Syncing to Google Drive has started itself back again. ACD still not working.