Hello, @Zaid ALi,
I have replied to your duplicate topic here: https://www.8theme.com/topic/single-product-page-image-size-on-desktop-not-changing/#post-336265
so please check the reply there and reply to that particular topic accordingly, and please do not generate multiple topics for the same issue to avoid inconvenience.
Thanks for your understanding.
Regards 8Themes Team.
