We fixed the mini cart/add to cart issue on the product details page. In the product details settings there is a new radio button list titled "Mini Cart Setup" with the following three options:
- No Mini Cart - when add to cart is click takes you to the cart screen
- Show Builtin Mini Cart - displays the mini cart within the product detail page and when add to cart is clicked the item is added to the cart/mini cart and you remain on the product detail page.
- Use Mini Cart Module - check this option if you have added the mini cart module to the product details page. When add to cart is clicked the item is added to the cart/mini cart and you remain on the product detail page.
The new mini cart settings in the product detail module has been installed on the www7 test portal and also a hotfix for v3.95 will be added to the cart downloads page.
Regarding the checkbox not displaying, are you referring to the product variant checkboxes on the product detail page or the show checkbox option on the confirmation page before payment?