Hi,
You could remix this app if you are finding it difficult to replicate the blocks. This is the sample app from the example post. I’ve used this example many times in some of my projects and it works fine.
You can open the example app above and save the search screen to my screens. Then in your app you can paste this screen back in and the blocks will already be done for you. All you have to do is design the screen 
Let me know if that helps.