So I got curios what is behind this cover and had a look. Turned the bike upside-down, unscrewed it and took it off. When trying to screw it back in, I realized that there is nowhere for the screw to go into. It kind of holds when I just push it back in, but doesn't leave me with confidence that it won't fall out on the road.
How do I re-attach it? Did I drop something inside that I need to get back out, if so how?
And what is it even for? I can't see the internal cable routing and I only found information about drain holes for water, but that should be the small one and shouldn't need a cover.
Is there a name for it? Did not have any luck with my google-fu.
Bike is a Cube Cross Race C:62 SL Teamline 2019 if that matters.