I see. Were they able to restore access once you explained? Or had they not saved it somewhere safe? I'm trying to understand the communication requirements around such a feature.

For most of them it seemed unnecessary; people don't realize the meaning of client-side encryption. I try to keep explanations very short and to the point.

> had they not saved it somewhere safe?

I had to delete 2 user accounts because they hadn't saved the key at all. All others had saved and were able to recover access. However, most didn't even realize they had saved it until I asked them to check their phone storage. A normal user would do anything to get past dialogs and popups, including clicking on random buttons.