Additional meeting and call-related features and issues within Microsoft Teams for business
Hello! My name is Mustafa, and I am an Independent Advisor as well as a long-time Microsoft user. I'm sorry that you are experiencing this issue, and I am hopeful that I will be able to help you find a satisfactory solution.
I tried to make my teams make the same error as yours. and I found the reason for it.
So when you make the meeting make sure to add the attendees when you are creating the meeting first don't create the meeting and add the attendees later on. If you do that only the first meeting is going to have a link because when there is only you listed for the meeting it doesn't generate a link but if you add everyone the first time you are not going to have this problem.
Please let me know if this doesn't work or if you need further assistance.
Warm Regards,
Mustafa