Here’s a demo of how to do that:
https://x.thunkable.com/copy/ccf72ad3dcbe7044d261bbf49754d570
(See the first screen that has your username.)
The key is to make sure the DateInput values in your data source exactly match the date format of your Date Input component. You can see in your screenshot (and my demo) that the label has “Apr 19, 2022” but your data source column has “2022/04/19”. Those will never match. So either change the column values or change the date input format so they match:
