I have recently been offered a place on a RYR mentored scheme APS MCC and I am in my mid 30's. I hope age isn't ultimately a factor, plenty of advantages us 'experienced' guys can offer so hopefully all airlines are after a healthy balance of young and 'old'.
There will of course be more younger guys at assessments - there are more younger guys training so hopefully the age ratios of people starting training to those getting assessments are about matched.
If you haven't done the APS MCC yet, maybe speak to the provider and see if they can communicate with their contacts at RYR....
Good luck and don't give up