I want to change the roles of some of my subscribers to authors or contributors. But i found a weird bug. Once i try to change the role of more than 1 user, the system automatically changes the roles previously changed to subscriber. For example, i change the role of student 6 from subscriber to auther, once i try to change the role of student 7, to auther, student 6 appears as subscriber again. The system only recognizes one author, and one contributor. Is this a bug? Can i have more than 1 author and contributor?
Thank you for your help.