I didn’t get the picture, the upload might not work on the forum form. Could you please try it again? The reply form file upload should work. (maybe not on all mobile devices, I’m not sure)
Well, it can be, I haven’t tried on MAMP to be honest, I’m a XAMPP user myself. I don’t know what are the differences though. They should be very similar.
But if you get the results, but the fields (title, content) are missing, then it might be something else. I’ve never seen a similar issue, so all I can do is guess.