The software itself has english version & german.

If english version is outdated , use newer german version.
Within german Version you can change the GUI to english (see flags upper right corner)

English portal online is www.portal.tvoon.org

*** Forum: Sorry, most user are german, so discussion is often german. But important things will be published here in english as well. TVOONics are good in english, so your questions in english will be no problem.