No I'm not. I'm merely pointing out why the app doesn't work. I don't expect the person using it to know that. I'm just arguing that the service itself works perfectly fine so his outrage about being a paying customer is misplaced and misguided. There are several solutions out there to sync with Google Drive. He's paying for the service, not for the syncing app. That is a free product that is available to anyone.
You make it sound like some kind of fundamental truth of computing that it would break.
The sync process is ~1 file at a time. It doesn't need to keep the entire database in (virtual) memory.