Dropdown Variations Not Working

I've created some product variations for my course based on pricing options and batch, and they're working just fine when I enable the pop-up. However, when I try to use the variables via the drop-down options on the Course page, the form doesn't work and it simply redirects to the product page, making the user have to choose their variables again. However, when I try to use the variables via the drop-down options on the Course page, the form doesn't work and it simply redirects to the product page, making the user have to choose their variables again. Any idea what might be happening or how I can resolve this?