I am the owner of jewelrynest.com
When I try to open a product and click to check out it's not clickable
Please help as an example https://www.jewelrynest.com/designer-diamond-necklaces/scintillating-judaica-jewelry/designer-precio...
I checked the site with the stapes you gave for the checkout. I can go to the checkout page. please clear the cache of your browser and try to move checkout.
If my answer is helpful full then please set the accept solution flag and kudos flag so other members can take the same reference.