Hi,
1. Theme Options > WooCommerce (Shop) > Shop > Shop page layout > Hide sidebar for mobile devices > Off.
2. Yes, or add the next code In Theme Options > Theme Custom CSS:
.products-grid .content-product .product-title a {
font-size: 18px;
color: #eab8c6;
}
3. You do not need to use additional plugin – Variation Swatches for WooCommerce, just follow this video – https://youtu.be/LgzC4iK-j6A , and disable the plugin.
Regards