I am unable to save files to a group I am in after clicking the puzzle piece.

romabala

I am unable to upload literature to the Zotero group even though I've accepted the request to another library group. It seems to pop up on the Zoterro website but I can't use extensions to place the file in the group. Is there anything I can do?
https://docs.google.com/document/d/1W8ufeyHDLiOAGe-B2n8aasISjCz3VOUofblMHAd7-yQ/edit?usp=sharing