When you create a new Global Admin in Azure Active Directory and log into https://manage.windowsazure.com you received the message “No Subscriptions Found”
This is because the Global Admin is not a Subscription Administrator. In the old portal, navigate to Settings > Administrators > Add ++
Enter the email address of the Global Admin or user you created and select the subscription you want to administer and then click the check.
If you want to do this in the new portal then navigate to Subscriptions > Select the Subscription you want to grant access to > Access Control (IAM) > Click Add
Click Select a Role > Select Owner
Click Option 2 Add Users > Select the User you want to have access to the Subscription.
Now log in as that user and they will have control.