I've been using Dropbox successfully for years on three devices including an old tablet running Android 5.1.1. That machine was getting rather cluttered so I decided to tidy it up by uninstalling several unused apps, but inadvertently also removed Dropbox.
I've now tried to re-install Dropbox but I get "not compatible with this device". I assume its original Dropbox app was an earlier version, but I can't see any earlier versions offered on the Dropbox download page. Are the earlier versions available anywhere? Thanks.