Products not adding to cart in Android devices

[12pulgadasbcn]

Hi,

For a couple of weeks now I've been having problems with my website in the mobile version, but only in Android devices (iPhones work ok). When you try to add a product to the cart, the page freezes and then simply goes to error page (Page cannot be loaded).

It also only happens with some products, not all, for example, with this one: https://12pulgadasbcn.com/es/chaquetas-cortavientos/3431-9144-columbia-challenger-pullover.html

I have version 1.7.3.2 and currently installed a Leo Theme.

Any ideas?? Please help it's urgent! Thank you to all!!