How did you find out the name of the company behind GitHub24 though? If I go to their website I do cannot see it, I even cannot find anything if I search the company name.
I was also surprised when I saw it. A GbR is a German "Gesellschaft bürgerlichen Rechts" which does not need to be formally incorporated and offers no limited liability. The name needs to include the names of all partners, so we can deduce it is being run by two persons. I am quite surprised they do this without liability protection. Upon googling, I found only a playlist on YouTube which has this name and contains one explainer video about signing up a company with German tax authorities.
If they are indeed based in Germany, they're required to have an Impressum / imprint on their home-page, without it, they risk being fined.
