Welcome to the Q&A Forum

I did a little more research on the issue queue for Wowjs and found that it is indeed impacting site's SEO. See https://github.com/matthieua/WOW/issues/196 here. Wowjs sets the element to be visibility: hidden inline and the crawler cannot see the element as evident from using Fetch as Google from Webmaster Tools. We will have to find an alternative to Wowjs so that the solution we come up with does not set the visibility: hidden property but still applies the animation.

i see, that makes sense. We will proceed with adding the canonical as mentioned. Thanks again