[Snapshot Pro] Snapshot pro – manual snapshot not backing up multisite install DB and files fully

Our website is a multisite install. On using Snapshot pro to create manual backup via

/wp-admin/network/admin.php?page=snapshot_pro_snapshots&snapshot-action=new

The only DB tables stored are the top level ones with the prefix wp_1 none of the other blog tables are backed up. Similarly for files wp-content/blogs.dir *only* contains a directory for '1' whereas on our WP install there are also several other blog number directories which don't appear in the zip backup.

'Files' is set to

'Include common files: themes, plugins, media (wp-content/blogs.dir/1/files)' I've looked at the 'Only include selected files' but there doesn't seem to be a way for me to select a directory that includes *all* the blogs.dir contents.

For 'Database' we have 'Include all database tables' selected our full WP DB has a few hundred tables but only the ones with 'wp_1' are being backed up into .sql files