Fix small errors in Prestashop and make a copy of page

Hello, I have a webstore with Prestashop and I need to fix some errors listed bellow. I need some one that can check all issues listed here. I’m waiting for your proposal. Thanks in advance. Information: - Web: [login to view URL] - Shared hosting: CPU Cores 6 - RAM Availability 6 GB - SSD Storage - PrestaShop: 1.7.2.4 - PHP: 7.1.20 - Custom template. [login to view URL] Error 1- User cannot edit address in Front end When a user try to edit the address this doesn’t work, the back office does not receive the changes and the customer get stuck and can’t proceed to checkout. Here a screencast of error: [login to view URL] Error 2- At Checkout, there is a field at Customer address named “Customer”. I need to remove this field. [login to view URL] Error 3- There is a part on the page that isn’t responsive and I need to this to be available on mobile. [login to view URL] [login to view URL] Error 4- The Faceted search module does not show a logic price search range. if it is possible, I want to put a “Slider” instead a “Checkbox” [login to view URL] Error 5- The page is slow (Frontoffice and backoffice), and in mobile is worst. Possibility to optimize the page. Additional task: 1- I need to add a additional field at Cart when users select a CARRIER (I’ll create a new carrier for this like “Pikup at carrier office”). At this field I’ll use to give the option to select an office to delivery the products. After that, I need an additional field that user will inform where he wants to delivery the product and I need to receive this information at the order in backoffice. [login to view URL]