Hello Mike Papadakis,
Thank you for contacting us and for using XStore.
1/ Have you tried to disable mentioned cache plugins? In case the problem is caused by them, contact the authors of the plugins first.
2/ Try to activate “Always Load “Wc-Cart-Fragments”” in Theme options > Speed optimization, and https://prnt.sc/v1kBanOUArR- (your site is not rtl, so wp-content/themes/xstore/css/modules/layout/off-canvas.min.css
wp-content/themes/xstore/css/modules/woocommerce/cart-widget.min.css).
Kind Regards,
8theme team