Allow users to sync files via web interface.
Today I ran a test on my Proton Drive account. I added a folder with 3 files in it. On my local copy of the folder, I added a 4th file then tried to upload the folder again. It told me a folder with that name already exists and gave me 2 choices. 1 Replace the existing folder or 2 keep both, with a number added to the name of the second folder. For windows and mac users you have the option to sync a folder with the Proton Drive client. For Linux there is no Proton Drive client. The only way I have to access Proton Drive is through the web interface. This leaves me one option to keep my files synced with Proton Drive. That is to keep delete the entire backup I have on Proton Drive and upload all the files again. On my local file system, when I copy a folder and there's one with the same name on the destination device, I'm given the option to write files into the existing folder and subfolders. If there's a file with the same name already there, I've given the option to overwrite it or skip it, and the option to overwrite all or skip all. Having that on Proton Drive would allow me to keep a backup of the photos I take by uploading just the new ones instead of uploading them all again. I get the impression you have little or no interest in a Proton Drive client for Linux. Can you at least add the option I mentioned here? It shouldn't be too difficult. It's just adding a couple of options to something (web interface) that already exists.
Thank you