Yes - you see German because you're using a German client. That said, you could go into the config window for MSBT, find the spots where those are defined, and you can probably change what is displayed.
Generally it's a good idea to make sure you have the most recent version of the official addon before reporting problems or asking for new features. Often, the problem you're having has already been fixed, or the feature has already been added. Addon compilations/packages in particular are almost never kept up to date; many of them don't even contain the most recent versions of addons at the time they're uploaded.