Add to cart button on mobile

I have cloned a J3 site with Eshop to a dev site so I can upgrade top J4.
Upgrade is fine but on my iPhone, none of the buttons, including Add to Cart, are clickable.
They work in the mobile view in Dev Tools (FF, Chrome). The template is Cassiopeia.
Thanks in advance for your help!
-Alan

Front-end:
joomlaconsult.com

nvm - I enabled jQuery and it's all good!

Dear Alan,

Thank you for submitting the question here. It's fine that you resolved it by yourself by enabling jQuery loading.

Sincerely, Giang