Apparently hundreds of extra euros went into the pockets of AfD MPs. They ran advertisements on YouTube. The head of the Legal Status Commission considers this to be “problematic and inadmissible.”
https://www.spiegel.de/politik/deutschland/afd-bundestag-abgeordnete-verdienten-durch-youtube-werbung-an-bundestagsreden-a-7a89c406-0ed1-4268-84ae-161cc2faa782#ref=rss