Pro version doesn't function

Hi i ask you an help because i have the pro version of S2 Member on my website from some year, but now i’e noticed it doesn’t function, like i had just the free one.
I had 15 -17 levels of membership and now i find just 5 levels!
Have i lost all the other levels?
How i can solve this problem? I need to use many level in my work, and above all i need to restore the previous configuration to continue to work.
Thanks much for the answers.

P.S. i’ve tried to deactive the pro plug in and reactive it… but nothing.