Hello Alex Boyd,
Welcome to Microsoft Q&A forum.
Microsoft rely on trusted verification partner to provide age verification services. The options to verify are plenty, however, not all methods are available to all countries and regions. Please check the Yoti verification method provided to see if it allows you to choose another method.
Please note that this is a user-to-user support forum. Moderators, contributors including external Microsoft employees cannot directly intervene in Microsoft product features or access back-end systems. Our role is limited to providing technical guidance on reported issues, requests, or ideas. So in case you cannot find any other method, you can try to contact Microsoft Support.
- Type Live chat in the search box.
- Now click Get help, and Select Contact Support or Sign in to contact support below.
- Go to the Products and services tab, and choose Other products
- On the Category tab, choose Billing and Account Profile questions
- Go to Confirm.
- You can now choose the option of Chat with a support agent on your web browser.
Thank you for your understanding.