So the photos you imported originally still show up, but not the photos of your recent batch? Are those photos in the same location as those that show up or are they on a different hard drive, external device or a shared folder (e.g.,Google Drive, One Drive etc.)?
Additionally, a log file might help us figure out what's wrong. You can create a log file like this:
- Start Tropy (or restart if already open).
- Select and open any of the photos which don't show up.
Help -> Show log files from the menu.
- Find the
project.log file and upload it here.