Hello Marilyn,
I have had the same problem concerning the file button to try to upload files and/or documents.? I also sent the "powers that be" a contact message a couple of months ago -- all to no avail!? If it is a problem of too many photos or whatever taking up space, I do not know how to fix it!? Also, I have not received any extra? charges from Groups.io.
Marge in MN
Marge in MN