How to translate plugins without textdomain

Has anyone been able to translate a wpmudev premium plugin that does not have textdomain in it?

I used to run the script add-textdomain to add textdomain to the plugins but the script has changed and I'm unable to run it locally on my computer. Still, as a member on WPMU Dev, I would like to be able to use the plugins so if anyone has a solution, please let us others know.