Sims 3 not aging up

I realized that my sims have stopped aging up even though I haven't disabled aging. 

I don't have any mods or cc and I play on my macbook. Recently, I had a problem where the connecting screen loads forever but that problem is fixed by deleting some files in Keychain Access. Could this be related to my problem with my sims aging up? 

If anyone has a solution please let me know!  

Thank you