Can't remove a user from a team

Hi,

I'm trying to remove a user from a team using Mattermost API 1.4, I don't get any error but it doesn't work. I still see the removed user in the user list of the team and in the desktop app Mattermost I can see the user in the list when I want to invite a user to a channel for example, but not in the list for direct messages.

Thank you,

Olivia