Tuta app dissapears frequently on Linux Mint

[RAH-321]

• This is not a feature request
• I've searched and did not find a similar issue.

Describe the bug
The Tuta desktop app frequently disappears from the PC. This effect has occurred multiple times on a desktop machine and two laptops , all running versions of Linux Mint, this one is running Mint 21 but it happens with versions 20 and I if I recall correct Mint 19.

To Reproduce
Steps to reproduce the behavior:

1. Install Tuta
2. leave everything as is for a few restarts
3. turn the PC on
4. See that Tuta has now been deleted from the machine
5. re-install Tuta

Expected behavior
After downloading and using the Tuta app for a while, the app disappears from the machine

Screenshots
If applicable, add screenshots to help explain your problem.

Desktop (please complete the following information):

• OS: Linux Mint 21
• Desktop Environment, if applicable cinnamon
• Version 21 (although I have experienced this with versions 19 and 20)

Additional context
Add any other context about the problem here.

[charlag]

Hi, this usually means that the directory where AppImage is located is not writable and it fails to write the updated version there. Could you please check whether that is the case?