Problem with like button

I installed this plugin , the like button is showing at the bottom of my posts , it allows to me to click the ‘Heart ‘ button, to register a ‘Like’ to the post. but the operation is not instantaneous, the moment I click on the small heart button, then ‘two small arrows icon’ keeps circling endlessly , the operation never stops / completes.

But if I quit , means I move on the the next page or do something else (that also include refreshing the page) and return back to that same post gain , I could see that the Like (registered earlier) is registered.

This is confusing , is there any thing wrong with my setting or else? Or is it a clash between this plug in with other plug ins such as WP Super Cache plug in?

Regards

SUhas