Hi Stephen,
Apologize for any inconvenience caused on this. You are facing trouble finding the Azure account linked to your active Content Delivery Network (CDN) subscription, which is making it hard to update your payment method. Usually in the case of a failed payment attempt, Azure will send email notifications to the billing email address associated with the affected subscription but depending up on this method to recover your account could delay your ability to update payment details. For faster recovery options follow below steps to identify the correct Azure account tied to your Active CDN subscription:
Check All Subscriptions in the Azure Portal by sign in to the Azure portal and Navigate to Cost Management + Billing__,__ Select Subscriptions to see a list of all your subscriptions, this will help you to find subscription tied to Azure CDN services and don’t forget to check the billing history under Cost Management + Billing this may provide clues about which account is linked to your CDN.
If you are having any doubt, you might have forgotten the password for the correct account, you can use the Forgot Password option on the login page to reset it.
Once you are identified the correct subscription you can Update Payment Method by navigating to the Cost Management + Billing and select the subscription where you want to update the payment method by clicking on __Payment methods.
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Kindly follow below detailed documentation links for the process:
__Troubleshoot viewing your billing account in the Azure portal - Microsoft Cost Management | Microsoft Learn
Billing and subscription documentation - Microsoft Cost Management | Microsoft Learn
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