Hello Julia Keseling,
Welcome to Microsoft Q&A forum.
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. In this case, if you cannot find the realms purchase in subscription, you should contact Microsoft Support to see if they can track it using the gamertag.
- 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.