Adult account says its a child account Minecraft Realms

Hi Alex,

Thanks for reaching out to us in the forums for this issue with Minecraft Realms on the Nintendo Switch. Based on the message you received, it may be possible that your account doesn't have the correct permissions to access online multiplayer across different
devices.

Is your account a child or adult account? Players under 13 years old will have online multiplayer disabled by default with Minecraft and
won’t be able to join Realms or servers unless a parent changes their account settings.
For help with changing these account settings, you will need to change your
Privacy and Online settings of the Xbox Live account.

For further information on this and other information related to Minecraft Realms or Minecraft on the Nintendo Switch, I recommend the following support articles:

Minecraft Realms

Minecraft for Nintendo Switch FAQ

I hope that this information helps out!

Is the account in question a child's or adult's account? If its a child account you may want to change it to an adult account and give it a shot.

Hi!

Clear your browser history (how to do) and login to https://account.xbox.com/settings using your Microsoft account. If the issue persist, try to connect using a different browser (e.g. Edge).

If yours is a child account, you can't change privacy settings. Child accounts are considered all accounts under the age of 16 for the US & EU, 19 for South Korea. If there isn't an adult account associated with the child account, the adult will have to make a Microsoft account & associate the already created child account with it. Only parent accounts can change settings.

You can check the date of birth on your profile here: https://account.microsoft.com/profile/

This article provides the privacy settings required to enable Minecraft realms access:

I'm trying to set up an Xbox Live or Microsoft Account (including Realms access for Child Accounts!)

Regards

Is your Microsoft account set up as an childs account?

if not check these links

https://support.xbox.com/en-US/games/game-titles/minecraft-realms-overview

https://help.minecraft.net/hc/en-us/sections/360004954931-Minecraft-Realms

Here is a link about issues with joining relms with child accounts. Minecraft Realms