Edit Existing Plugin for WooCommerce

We have a 95% developed Wordpress plugin that works with two problems, which need to be resolved before adding it for users to download off the Wordpress repository. Its purpose is to add additional fields to WooCommerce Simple and Variable products. A previous developer claimed to have expertise, but was essentially entry level leaving us with a crippled plugin. The problem with the plugin is it locks up the Variable Product Variations Function, which is likely due to some PHP hooks improperly added. There are fields appearing under the wrong tab under a Variable Product posts as well. A skilled plugin developer will be able to resolve these few problems easily. See image attachments! Finally, the plugin needs to act as custom field aggregator Google feed plugin for "WooCommerce Google Product Feed by Lee Willis". Not a complicated task, the fields merely need to be selectable from these plugins to map Google Feeds for a Google Merchant account. See "image missing-identifiers-google-feed.jpg" attached. There is some other questions about how the JavaScript is used, and cleanup of the PHP file overall. A NDA will be provided for a digital signature to assure us that a developer will not divulge, resell or give the product away, a binding three-year affidavit. *** IMPORTANT! This is an urgent project at this point, behind by two weeks, therefore we need someone who can start working on it same day hired, and finish it very quickly. We guess 4-5 hours might be required. *** A more detailed outline with screen captures WILL BE provided for the chosen freelancer. The outline above is essentially the whole project. The potential to be the ongoing resource for this and other projects is based on quality results and few to no mistakes. If you quote low but edits actually takes more time, we are flexible. English proficiency is a must!!!! If you can't read or write proficient English, please don't quote. This is nearly always the cause of problems with our projects, poor English comprehension skills.