This may be caused by an error in communication with your MLS.
Re-fetch the listings and re-publish the report to gather the missing photos and have them displayed in your report.
To re-fetch the listings - it is not necessary to start the report over from scratch - please do the following:
1. While logged into Cloud CMA, click on the CMA tab.
2. Locate the report you wish to re-fetch the comps for and click Edit.
3. Click the green Fetch Listings button at the top.
4. On the Listings tab, you should see your listings, and more photos should appear. Click Publish in the black bar.