website problem with facebook

Hi Dears, i have a website [login to view URL] for example go to this link or any of them [login to view URL] after click on the blue button (pic 1) - i will upload the pictures for better understanding it will load result like (pic 2) it works fine when you are going directly to the website on safari or mozila or whatever browser but this blue button is not clickable on mobile when you are trying to open this on facebook for example: here is a link of my website shared on facebook (pic 3) and link is this [login to view URL] im going to click this link on my facebook and the link will open on the browser of facebook like this (pic 4) now i want to click on the blue button of this test, ( pic 5) but its not working and its not clickable this is the problem of my website could you please check and solve this regards sameem