Hey @Grace H! I moved your comment to a new topic so we can dig into it separately. 

Have you tried adding a brand new label to a card that has never had that label before, via the Butler automation, and then tried testing your Zap afterward? Sometimes if a card has seen a label before, it may not show up in the sample data. 

If that still isn’t working, contacting our support team is going to be the next best step into understanding what’s going on here!