Animation doesn't work on Bubble and mobile view issue

I want to create a slide up which I am learning from this video:

I’ve created a floating group, relative to bottom.
Then there’s another icon that I want when user click on it, the floating icon slides up.
So in workflow of that icon, when that icon is clicked, I chose Animate an element and then chose that floating group, with Transition NoBounceUp.
But when I click on review, when I click on that button, nothing happens but a progress blue bar appears on the top of the mobile like it’s loading. and it never ends.

Any idea on how to fix it?

Did you utilise view or animation view? I would recommend that when you click, utilise animation and add an element; it should work.

Hi karan, I am new to bubble, would you please let me know how to utilize animation? I on workflow when I clicked adding … there were not any utilize…
When I click on preview, I review it with my browser, I click developer setting/mode and see it in mobile view and it is responsive.
What did I miss?