Royalfashion review for Shopify Search & Discovery

1- I haven't added this app in any of my store by why this added automatically? 2- If Shopify installed it then you must have to inform us that its installed. 3- Screen is blank i thought due to browser but in all browser its same. 4- After this I saw I can not edit filter which are already there. 5- Kindly remove this feature or make it use able asap.