I followed the directions in this forum (took awhile just to find it), but still can't upload pictures to my add even though I followed all the requirements laid out.
My suggestion: Make it a little freakin' easier. Craig's list took my pictures full size with no problem. Why can't Fiberglassics? I remember having this problem like 5 years ago - why can't this be fixed? I know this site is free and all, but I think everyone would benefit from easier picture uploading.
BTW, when I tried to log back in after being away for a few years, the site wouldn't take my username and password - is there an expiration date? I had to create a new account, but I am not a new user.
I tested it by posting ads using firefox, chrome and edge, all worked. I posted one photo and went back and added one more. I left two in the part/misc. section. Not sure but you might try a different computer as a test.