Check your full Activity feed, and the dates of each of your claims. You'll see the day you missed. We have more about how our Loyalty program works in this support document:

https://cointiply.freshdesk.com/a/solutions/articles/36000127215-my-loyalty-reset-can-you-fix-it-

Cheers, and good luck rebuilding it. I've lost (and regained) loyalty at a ton of faucets over the years. The good news it can be rebuilt.