This app damaged a bunch of functionalities in my CSS and Theme. Uninstalling the code was a nightmare, and the customer service never replied. Be aware of these apps and developer, when they do reply, they are aggressive and avoid helping you at all costs.
It's a backend app so it won't change anything on your front store (CSS or theme). We received many 1 stars reviews from you for all our apps. It's unfair & we will raise this case to Shopify.