I'd suggest reaching out to our Realms team to take a look! To keep your information secure, please complete our request form at msft.it/60139Wwr1 so we can quickly and safely assist with your question! ^BT
Are you encountering any errors when trying to purchase a Realm? Please share some more details about what you're encountering, and if you share any screenshots or photos, be sure to block out any personal information for your security! ^FF