The photos clicked at End Job/Travel is not saved in Salesforce. When you click photo before Ending Job/Travel and click the Stop Job/Travel you see an error message on the mobile screen as below
"Missing Timesheet No timesheet to tie the image to OK"
This is a known issue, the images clicked at the time of Check-Out is not saved in Salesforce, but you are Checked Out of Job/Travel.
This will be fixed in our next release of Mobile Time Tracker.