How to restore notes erased after synchronization?

Joplin 1.0.201 (prod, linux)

Hello, I am using encrypted file system synchronization. The folder is shared on several devices. Today I opened Joplin and after synch it cleared all the notes, but the synchronized folder itself is still full of encrypted data.

I tried on a clean install, it fetches notes from the folder but does not show them(!!). I tried to disable encryption and re-synch them. It decrypts notes(on the disk) but still does not show any…

So what’s the path to restore as many notes as possible? Even in decrypted form, content seems to be %-encoded…

To be clear: Android client(1.0.305) erased all the notes after synch. I installed Joplin on Linux(Joplin 1.0.201) and tried to synch with the same folder. It fetches smth but shows nothing.