Yaser Arafat

we have an online game which has built on GSAP the buttons in the game work fine on laptops but on mobile they are not clickable and the user cant click on them what is the issue? this is the link to the game www.ebcgame.com and this is the source file https://drive.google.com/file/d/1FDqOc6jjsFTKyi1i33Sr2pdE4sA2uUqI/view?usp=sharing Please Advise