Hi @Adnan Malik ,
Welcome to our forum!
As I know, the new location of Mail, Calendar, People, Tasks, and other modules will be displayed when the "Coming Soon" button is turned on. So, if you want to recover the location, please turn off the button.
By the way, if you're an admin, you can deploy a .reg file to users' machines to turn off Coming Soon. To create the .reg file use the following steps. For references: Turn off Coming Soon for your organization.
Hope the above help!
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