Can't get into Realms on Minecraft: Java Edition? Due to GDPR (http://minecraft.net/privacy/gdpr/ ) users under the age of 16 need parental consent to play on Realms. To set up parental consent on an account, visit http://minecraft.net/update-account .
We're sorry to hear about the trouble with your Realm. While this is most likely a temporary issue, please try closing and re-opening your Realm. We hope everything is up and running again soon! ^SA