Hi @IBN ,
According to the document below, you would need to convert users from Teams Exploratory to a paid license that includes Teams:
Manage the Microsoft Teams Exploratory license
If the answer is helpful, please click "Accept Answer" and kindly upvote it. If you have extra questions about this answer, please click "Comment".
Note: Please follow the steps in our documentation to enable e-mail notifications if you want to receive the related email notification for this thread.