Twitter module showing only some images

Hi everyone,
I posted my issue as a reply in an old thread (link below), but thought it might be wiser to post as a new question.
Using 1.79, not all Twitter images are displayed or downloaded, either on the CMS or the display itself. I can’t determine any correlation between what is and is not shown; all images are JPGs, file size does not seem to be an issue, nor does the length of the tweet. All text and profile images display normally, and the widget is returning every tweet, just not every embedded photo.
The media does not seem to be being downloaded, as I found only a few image files in the local directory, even after multiple days. I was able to replicate this using a different layout and display computer; the same images were missing in every instance.
Can anyone offer any suggestions?