It would be great if Proton Drive has an API or WebDav support for Cryptomator to be able to implement it in the Android app to sync Cryptomator vaults to Proton Drive directly that way

It's already possible to do that on Windows (and I beloeve macOS?) using the Proton Drive app and setting up the Cryptomator vault inside the Prpton Drive directory

But on Android it's not possible which makes accessing important files on Android too hard

Thanks