Hello joseph.westwood,
Thanks for your question.
To resolve this issue, double-check whether the following items are true:
- The information that you provided for your Azure account profile (including contact email address, street address, and telephone number) is correct.
- The credit card information is correct.
- You don't already have a Microsoft account that uses the same information.
More details you will find here: You see the message 'You are not eligible for an Azure subscription'
You can mark it 'Accept Answer' and 'Upvote' if this helped you
Regards,
Abiola