If you don't upgrade and pay for Microsoft Teams Premium you could lose your data
It is fair to say that the upcoming changes to Microsoft Teams are more than a little confusing. The impending launch of Microsoft Teams Premium means that various features that have been free so far, will only be available to those willing to pay a monthly or annual fee.
The existing free tier -- which Microsoft is now referring to as Microsoft Teams Free (classic) -- will vanish on April 12, 2023. There is a new free tier launching called, sightly puzzlingly, Microsoft Teams (free), but anyone opting for this will not only have to sign up for a new account, but will also lose access to the data associated with their old, free account.