I concur on the aging puzzle. I don't get it either. What confuses me most are the multiple numbers on some of the photos. Likely meant for each person seen on the photos? However there are more numbers here than the safe needs.
Viewing post in Zarathustra - Cybergeddon comments
Each number corresponds to one person. Some persons are shown on multiple pictures. In ascending order (which is not the right combination) the numbers are: 034679 which is the correct length of the combination. :) If you had trouble reading the numbers please let me know and I will try to make them more clear.