I’m having a similar problem. I just upgraded UAM from 1.4 to 2.0.6.
The UAM Settings reports:
“Choose a backup to revert the database to this user access manager database version. Note: The user access manager database version differs from the user access manager version.
Delete a database backup
1.4 delete now
Choose a backup to delete. Note: That cannot be undone.”
Wordpress Version 4.7.4
DB Table wp_options shows uam_db_version = 1.5