Currently setting up a new site, in German.
Found this plugin very useful, but no German translation available, but I saw in release notes that this should be possible.
So picked up the po-Editor and started going.
I found a number of issues, two "bugs" and some items where the text for the frontend registration form was "hardcoded" instead of using the i8n functions for output.
I have made code changes to the main php file and edited the pot/po file and got a version which seems OK to use for me now.
How can I get that back to you? It would make sense to update this in future version. Actually one or two fixes I consider as "intermediate", may need further updating.