Fix bugs with WordPress Ebay Affiliate plugin.

I'm using the following plugin to bring eBay store listings into a WooCommerce WordPress website. eBay Affiliate - [login to view URL] The plugin worked great for the initial import, but it has never maintained the posts updated in WordPress, as it claims to do. It is also poorly coded, as the plugin CSS and other code affects the whole of the WordPress admin, instead of just those admin pages created for the plugin. I have tried to work directly with the plugin developer, but am getting the run around. I receive an email about once a week and we've been working on trying to get this fixed for about 4 months. If it's not one thing, it's another that stops them from troubleshooting or testing and we've gotten nowhere. I need someone to: 1 - Fix whatever issue is not allowing the plugin to work with eBay to: a. Update existing listings with correct information, and b. Remove listings that no longer exist. 2. Correct the issue with the conflicting admin CSS that is affecting the whole WordPress installation. 3. Correct the conflict that stops me from being able to save a regular post when the plugin is active. I need someone who will be reliable, can respond and complete work in a timely manner. Please send me an example of a time you fixed a bug in another developers code and what the result was. Do not send me a list of sites you have worked on showing your expertise. I only require the one example requested. Thanks!