Information panel should show "all" filename properties not just the "first" one.
For a reader, the "Information Panel" shows the file name chosen. If a reader has more than 1 filename property (e.g. PLot3D reader), it just picks the "first" one. That's wrong. It should show all filename-like properties.
To upload designs, you'll need to enable LFS and have an admin enable hashed storage. More information