Welcome to the Cryptomator community 
you need an external app which makes your s3 storage accessible over the local filesystem (e.g. sync to local directory). See also Does the mobile apps differ in functionality from the desktop applications?
Welcome to the Cryptomator community
you need an external app which makes your s3 storage accessible over the local filesystem (e.g. sync to local directory). See also Does the mobile apps differ in functionality from the desktop applications?