I installed this plugin for Trello - https://www.burndownfortrello.com/ and then removed it, but it keeps showing up on my boards. I've logged out of all Trello instances and cleared my cookies. I'm not sure what to do next.
I emailed the developer of the Burndown extension and it turns out the icon was for the Scrum for Trello browser extension. After I removed that extension, the icon disappeared. The developer was super helpful, so I'll paste his response below in case anyone else has this issue. I'm marking your comment as the solution so people know this is a solved issue.
You’re invited to our first ever Trello User Groups Good news for current and aspiring Trello enthusiasts! We’re launching Trello User Groups so that you can network, share ideas, solve ...
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