@Arad Haghi
Thank you for your post!
Based off our Create a B2C tenant article, and walking through this myself, you should've linked your B2C tenant to your Azure subscription during creation.
You can confirm this by navigating to your:
B2C tenant -> AzureAD B2C -> Confirm you have a Subscription ID and the "Subscription status" shows as registered
Navigating back to my AzureAD tenant -> Subscriptions:
If you have any other questions, please let me know.
Thank you for your time and patience throughout this issue.
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