Hello,

Thank you very much for choosing our theme and for your warm feedback.

Issue # 1. I went to the product page in ES and added the product to the cart, I see this
http://prntscr.com/np9g23 then I switch to the French and view the cart and see this http://prntscr.com/np9igl

Another product in ES https://gyazo.com/bcd75bc3bee10e6ce44357e0e7f2a026 and the same in FR https://gyazo.com/6135bd3efa402b8f6de3a3ae82227f92

Issue #2 Please deactivate all the plugins not related to the theme and switch the parent theme, check the issue, if the problem remains, leave the plugins not activated we shall check.

Issue #3

1. You have hidden the size guide http://prntscr.com/npa716

2. You need to assign the categories http://prntscr.com/npa7gn You have not translated the categories to all the languages that is why this field is empty.

3. You have not translated the size guide to all the languages https://gyazo.com/afd067143021103b92cb68adf6deac2d

4. You need to choose the size guide in the product page https://gyazo.com/1b26c2f93a8b850c1342441dfc83600d

B. MINOR ISSUES

1. Add to cart button Unfortunately, there is no option to do in the way you need, however, we shall consider it and will try to implement it in one of our future updates.

CSS:

1. Search form

body .searchform input[type=text] {
    height: 36px;
}

2. Message background

body .woocommerce-message{
background-color:red;
}
body .woocommerce-info{
background-color:red;
}
body .wpcf7-mail-sent-ok{
	background-color:red;
}
body div.wpcf7-validation-errors{
	background-color:red;
}
body .mc4wp-success,
body .mc4wp-error{
	background-color:red;
}

3. Page title

body .title-size-small {
    padding-top: 20px;
    padding-bottom: 20px;
}

Best Regards