Groups not showing sheet music

I created a musescore group for my bandmates, where we would share the sheet music for our tunes. However, there is no sheet music section in the group, only the "Discussions" and "Members" sections, even though I have already uploaded manuscripts to the group chat. When I click on the "invites" tab, the sheet music section appears, but when I then click on it, it just says page not found. Has any one else faced similar issues? I can't find anything on this problem when I try to look.