I use Mac (OS Monterey 12.4), and have selected "Make available offline" on my dropbox for new files and selected all folders to sync to my Mac. However the files are not being made available offline. Files that I open remain available offline for a while, and then retreat back into the cloud. This problem has been going on for ages: (1) how to I make all my files available offline (without individually marking them all for download)? and (2) if I want to move away from Dropbox how do I retrieve my files?