Hi, Mack. Galaxy S7 Edge 7.0 w/Chrome.
I could see the paper clip and "Attached Files" next to it, but no .mp3 files below that. Also, the attached image at the end of the post is not there.
Now these .mp3 attachments I couldn't see were previously attached by others; and me. Not some that were added by (my) smartphone.
I'm here on my desktop now and they're all visible. I was viewing this site in Mobile mode on my phone.
_____________________
Solved ! (sort of..). This is more of a reason for it rather than a solution.
As I am posting this, I discovered the reason: Viewing this site in Mobile form does not display attached images or attached files; on my phone, anyway. However, I just signed in here with my phone, scrolled to the bottom, clicked "Full Site", and voila! All attachments and images have appeared!
Thanks for your assistance, Mack