Hi Carter,
As stated in this link, your Microsoft account will be linked to a new place in Azure called Microsoft Learn Sandbox. Also, when you start using the sandbox and agree to the rules, you'll be added to a special subscription named Concierge Subscription.
The first time you activate a sandbox and accept the terms, your Microsoft account is associated with a new Azure directory named Microsoft Learn Sandbox, and you're added to a special subscription named Concierge Subscription.
Each time you activate a sandbox, a single resource group is created for you. You can use it to create and manage all the resources (for example, virtual machines, storage accounts, and app services) that you need for a module.
If you are still having issues I recommend reaching out to Coursera support:
https://www.coursera.support/s/learner-help-center?language=en_US
If this is helpful please accept as answer or upvote.
Best regards,
Dillon Silzer, Director | Cloudaen.com | Cloudaen Computing Solutions