Proton
Empowering you to choose a better internet where privacy is the default. Protect yourself online with Proton Mail, Proton VPN, Proton Calendar, Proton Drive. Proton Pass and SimpleLogin.
Proton Mail is the world's largest secure email provider. Swiss, end-to-end encrypted, private, and free.
Proton VPN is the world’s only open-source, publicly audited, unlimited and free VPN. Swiss-based, no-ads, and no-logs.
Proton Calendar is the world's first end-to-end encrypted calendar that allows you to keep your life private.
Proton Drive is a free end-to-end encrypted cloud storage that allows you to securely backup and share your files. It's open source, publicly audited, and Swiss-based.
Proton Pass Proton Pass is a free and open-source password manager which brings a higher level of security with rigorous end-to-end encryption of all data (including usernames, URLs, notes, and more) and email alias support.
SimpleLogin lets you send and receive emails anonymously via easily-generated unique email aliases.
In the Proton drive app you should be able to select the options for the folder with your photos in (three vertical dots to the right of the folder name) and select "make available offline". That should download the photos to your device - however I don't know if that makes them available to other apps to use (as in properly restores them)
Edit: it seems at present the photos folder is separate to all other backups and is not available via the desktop app either. Apparnently this access will be "coming". So I can't see a way to restore your photos. Maybe someone knows an alternative route.
Exactly. The photos folder being separate sort of makes sense on mobile, but it's only accessible on mobile which makes no sense.
One of my requests in the survey was to make it available as a dedicated folder, or better yet let me decide the destination folder.
you may need to use your desktop/laptop to do that.