Reviewers database after upgrade

Dear colleague,
after upgrade OJS from 3.0.2 to final version actually, i have a problem with reviewers selection.
Reviewers names and email are in my database but if i would like to select some reviewer, i can not find it, only then if i edit reviewer account. I must to edit roles, all our reviewers has reviewer role, but it must be reactivate. Is there some other problem?