i tried to add the additional seasons, but this is locked by a mod. if someone could unlock this i woudl do the changes.

it's locked because there are no seasons at all all episodes so should be in one season

Did you look at the link I provided? ZDF as the braodcaster who made this series says there are seasons - at least 4. In other discussions you argue that only counts what the producing broadcaster says.

Yes and they started with no seasons at all, years later they grouped them into seasons for the Mediathek and DVD selling, but we stay with original airing, you can make a different order here https://www.themoviedb.org/tv/122812-marie-brand/edit?active_nav_item=episode_groups

https://de.wikipedia.org/wiki/Marie_Brand

Reallly funny. If this ("started with no seasons at all") would be true, then Marie Brand shouldnt be a series but a list of films - as you argued also in another discussion. anyway, i was willing to do some work to improve tmdb, but I guess i can stop this plan. I apologise for the inconvenience, it will not happen again.