Do you have any emails that referenced the board? If you follow the link to the board from somewhere (I'm sure there is a way to do this in app, but having trouble finding it quickly) or check your browser history - then you can unarchive it there.
Hello Community! My name is Brittany Joiner and I am a Trello enthusiast and Atlassian Community Leader. I'll be sharing with you a series of videos with my top tips on how to best use Trello...
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