[XBOX] Trade direct message - Account unable to this feature

Hi.
Can you make sure that you xbox profile has all the relevent restrictions removed?
Do you experience this problem only with 1 account or you cannot send messages to anyone?

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I don't know what you mean by relevant restriction removed. Can you please tell which restrictions?

On you xbox navigate to settings-account-privacy and online settings-xbox privacy-communication and multiplayer.
Here you can find all the relevant message settings.

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I can send messages normally ingame.

Then it seems like that the account you tried to contact has restrictions that do not allow them to receive messages.