WordPress export: Media option is missing

I am trying to migrate posts and media to a different wordpress site but ran into a strange problem.

On the old Website under Tools > Export there is just no media option. On the new website when I go to Tools > Export I can select media to be exportet. I am kinda clueless what’s going on here. I can’t e even find a similar case via the search.

Any ideas? I would be happy!