There's a chance your brother may have unintentionally created a Microsoft account if he signed up to a Microsoft service (like OneDrive, for example). It may be worth using a different email to create a new Microsoft account. ^NS
Your friend actually needs to download the update, in this case. Although it's a bit confusing, 1.18.2 is actually the update before 1.18.10. You can check out a list of the latest updates here! msft.it/6016wD1cm ^NS
Before uninstalling, first check and see if there's an update you can download! If that doesn't solve the issue, go ahead and contact us at msft.it/6012wD1dw so we can do some more research. ^NS
The latest Bedrock update is version 1.18.10! Please check and see if this is the version you have; if not, let us know and we'll see what we can do to help. ^NS
That's a cool idea! Please feel free to submit any suggestions at msft.it/6016wDEBK. Check out this article if you have questions about submitting or searching for suggestions: msft.it/6017wDEBz ^NS
Realms will sometimes take a bit of time to update after a new version has been released. If your Realm hasn't updated yet please be patient as we roll out the update to all Realms. ^NQ