Fix Wordpress Banner and customize Menu Categories

Hi! I need to fix and finish a WordPress Site. I do WordPress sites for a Living so I am looking for someone that is interested in a long working relationship after this project. I do many WordPress sites but sometimes I don't know that much and I need professionals. I’ve been working in a website and I have 2 issues: 1- (princo 1 image) is this banner where you click left or right arrow and the image moves [login to view URL] In this case is not working because the scrip must be having problems with other script 2- We’ve also customized the products section (there are pdf catalogs inside final posts). So I want to have diferent levels of subcategories in the posts but I cant. I have the following structure: •Bandas (Category) ?Automotriz (Post) •Mangueras industrials (Category) o Aire multiusos (Child Category) ? Push On (Post) ? Servicio Pesado (Post) ? Uso General (Post) Has you can see the “Bandas” Category doesn’t have a child category but it has a Post, which needs to be displayed but instead it shows inside the same category. As you can see in the “Mangueras industriales” category has child category and that works fine. The issue is the ones that do not have child category. Only category and then post. 3- This site has a breadcrumbs plugin that needs to be matched to that structure. I know I am not giving all that much information or links but I promise I will give you an extra % for this. Like I told you I am looking for a long relationship for future website updates and fixes because some services are re sold I need someone to have an hourly rate of $10 per hour or below. thank you!