no shipping price displayed on cart page on firefox

Hi,

The shipping price is not showing on my cart and checkout page, when I’m using Firefox or Chrome on Mac. With Safari, no problem.
That’s a big problem, cause the total isn’t the right one…

Here is my website https://marcaymon.com/shop/

I have the latest version of woocommerce.
Any clue what is happening ?
Thank you

https://www.ads-software.com/plugins/woocommerce/