Hi, I believe the eMember already has a German translations that you can select in the language menu on the settings page of the eMember.
If not then
1. You may need an update:
https://support.tipsandtricks-hq.com/forums/topic/how-and-when-do-you-get-an-update
2. See the following post on language translation:
https://support.tipsandtricks-hq.com/forums/topic/plugin-language-translation