I'm seeing the same problem. I'd recommend sending a message to support using the Feedback link at the bottom of one of the Come, Follow Me pages.
In case it's helpful, I found several additional coloring pages here:
https://www.churchofjesuschrist.org/chi ... s?lang=eng
You can also download the full Come Follow Me for Primary book as a PDF, which includes the coloring pages. You can use Adobe Acrobat, or if you have a Mac, Preview, to extract the specific pages into separate PDFs. Or, when printing, you can set it to print just specific pages, without needing to extract separate PDFs.
https://media.ldscdn.org/pdf/manuals/co ... f?lang=eng