I try to click the box to remove members but it does nothing.
Community moderators have prevented the ability to post new answers.
Are you an admin of the workspace?
If not, you may not remove members.
If you are
1: Make sure you are following the guidelines here
2: Try accessing Trello through an Incognito/Private session (if using the web browser) or clearing your browser/application's cache
3: If all else fails, there could be a bug. Try contacting Atlassian directly.
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