About syncing MS Teams (Online Meetings)

flow dev1
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Greetings,
I have question on syncing MS Teams.
We are trying to use Online Meeting by syncing MS Teams to our product and we found that Online Meetings API isn’t supporting personal account.
So, we build our app as multi-tenant but we are currently getting error code AADSTS50020 (Not registered by administrator)
Is there anyway can client register themselves not by administrator?
Thank you for all the comments and helps.