Hi Farah, did you lose some cards, or descriptions on cards?
If you lost some cards, can you check if you have a filter on your board? If there's a Filter enabled, you'll be able to see this at the top right of your board, there should be a button that says 'Filter'. Next to this text is an X (if you have a filter enabled) - if you press this, it'll cancel the filter and you'll be able to see your cards again.
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