Mobile version pop-up checkout not working

[Justin_Nair]

Hi guys,

Would appreciate any insight or resolution for this.

The site is active and has been functioning properly for a while now but lately I have been getting messages from customers saying that the checkout is frozen.

So I decided to check and found that on the mobile version only, when a product is added to cart, the pop-up options does not work anymore. 

Any assistance would be greatly appreciated.