On page check-out not working

Magento 1.9 here, moved website from one hosting to another, now checkout is not working properly. After billing info, when I click “continue” it won’t show me shipping info form.
I tried all solution i found in previous answer, but wasn’t able to solve. No Javascript errors.
Another problem is that when i click on “Add to cart” button product is added but the waiting wheel doesn’t disappear

Can you help ? Here’s the website https://www.centocaffe.com/