Microsoft 365 features that help users manage their subscriptions, account settings, and billing information.
Hi Tricia, People have reported the same issue. The promo code for this offer i.e. the unique link can only be generated by Microsoft support so I kindly ask contacting them.
Please get in touch with Microsoft Support for further help.
Please go to https://support.microsoft.com/contactus page
Type the "Billing" option and press Enter.
Please click on the ""Contact support"" button at the bottom.
Select the Product and Category for support according to your requirement.
The available support methods will be shown to you.
I hope this information helps. If you have any more questions, don't hesitate to reach out.
Otherwise, please take a moment to rate the answer. Wishing you good luck!