2. I debugged your site deeply and finds that the issue is in those attributes, I deleted the XXL attribute and then recreated it, and then again assigned those 3 products to the XXL attribute and it is working perfectly fine now, I have captured the video for you as well, please watch it here: https://www.veed.io/view/afae963a-fbfb-4baa-a57c-a82c3850bcfc?sharingWidget=true
So you have to delete the XL attribute as well again and then recreate it and assign the products to it as well, It will surely work for you.
Regards 8Themes Team.
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