I see a CSS issue on the product grid on the shop page for some product stock status. When you hover over the product, the stock status shows and disappears. Although this is happening only with some products, strange.
Please insert the site admin access into the Private content below the message area. We will take a closer look at the case.
Please, confirm the permission for plugins deactivation, and switching to the parent theme. As soon as we complete the testing we will enable all back, however, the site would be without plugins for 15-20 min. You would better make the full backup of your site.