I see lot of responsivity bug on mobile about the page title, on lot of page : product, category, whish list etc.. I don't use any template. https://infinite-piercing.com/product/fancy-earrings/
Please, turn off all of the plugins (leave WooCommerce enabled only), remove your custom css, refresh your cache, and check if the problem persists.
Moreover if you use a child theme, switch to parent, and recheck it.
Done, but still same
I can see that you have under maintenance enabled.
Can you turn it off for a while, please?
Did you disable the Subheader for your products?
I do not see it anymore.
Probably disable on product but he is on other page https://infinite-piercing.com/2022/06/17/quest-ce-que-le-lorem-ipsum/
Your mobile view takes Subheader padding from the desktop version.
Please, go to Betheme -> Theme options -> Responsive -> Header, and set the Subheader padding to zero or some low value.
thanks it is solved