Hi @ICT 03 (PEP)
Please confirm the license status: Sign in to the Microsoft 365 admin center and select Users > Active users. Select your user on the right and switch to the Licenses and apps tab. Make sure Teams is listed and activated.
If you encounter an error or need further assistance, please do not hesitate to contact us. Thanks for your understanding and support.
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.