Unable to mount from external or network drive

[infeo]

Description

If the vault is not located in the user home directory, it cannot be chosen in the file picker dialog started by Cryptomator. Additionally, already existing vaults (i.e., added over the appimage) are not found, if not located in the home dir.

Reason

Cryptomator flatpak is restricted to only access the user home directory.

Solution

Ensure Cryptomator is not running and then override the option with one of the following:
You can give the Cryptomator Flatpak complete access to your host file system, with the following command:

sudo flatpak override org.cryptomator.Cryptomator --filesystem=host

You can also only state where on the file system Cryptomator Flatpak should have access (e.g. to a specific directoy):

sudo flatpak override org.cryptomator.Cryptomator --filesystem=/media/my_thumb_drive

You can provide multiple filesystem options, so you could do any number of mount points, for example:

sudo flatpak override org.cryptomator.Cryptomator --filesystem=/media/festplatte --filesystem=home

If you prefer to use a GUI tool, you can use Flatseal to modify the permission accordingly.

Taken from https://community.cryptomator.org/t/cryptomator-flatpak-doesnt-find-safes/9613/2?u=infeo