Hello,
1/ Fixed. Please check.
2/ You can read all about “Request Quote Button” in our theme documentation here: https://xstore.helpscoutdocs.com/article/135-request-a-quote
3/ https://xstore.helpscoutdocs.com/article/89-product-images Go to Appearance > Customize > WooCommerce > Product Images > Main image width > set 731 and regenerate thumbnails, as described in docs.
Regards