Repair a WooCommerce MySQL Database

We have a production WooCommerce site that a contractor just upgraded from an older version of WooCommerce to the new version. The site is now having some errors. Primarily, there are two problems: 1. The orders history is showing info from old orders along with the new order info. (See screenshot). 2. The site is having issues processing credit card transactions with the [login to view URL] AIM Gateway plugin. The replicable behavior is as follows: a. User submits order with credit card information. b. Transaction is declined with error message from [login to view URL] (see screenshot for error message) c. User resubmits order with same credit card information d. Order is processed successfully So we are looking for someone to troubleshoot and repair these issues, as well as check the overall integrity of the database. Please only apply for this work if you are highly experienced with WooCommerce at the database level. We already have enough problems with this site, we do not need a contractor that intends to learn as he goes. We can chat on Skype about the process to be used to troubleshoot and repair these issues. Please state your qualifications and experience with this type of repair when you apply.