Hello,
I have visited your website.
1) Please try adding the following Custom CSS in the Global Custom CSS area under Theme Settings >> Custom CSS.
.cat-design-default .wd-entities-title, .cat-design-default .more-products {
color: white;
}
2) You need to install and use the loco translate plugin then choose the correct path to translate the string.
You can also watch the video in our detailed documentation in the following link: https://www.youtube.com/watch?v=D3NsDdMzsls
Best Regards