Hi it seems like there is quite a few conflicts between Elementor and GP.
Quantity Button – ive deactivated all plugins and problem still occurs. Only when I change the theme to Elementor Hello, that is when it resolved.
Was testing the product image at the same time, again GP with Elementor seemed to be the issue. I tried other themes with elementor and product image showed up fine, as soon as I change the theme to GP, it stopped showing.
Quantity buttons – you can disable that option in Customizer > Layout > Woocommerce. If you’re building the woo part of the site with Elementor then you may want to disable the Woocommerce module in Appearance > GeneratePress.
As GP uses the standard Woo templates there should be no conflict and no reason why the featured image should not display- maybe first try disabling the Woo module as mentioned above.
If not, switch back to GP theme then i can take a look at what the featured image issue is.