OpenCart Version Upgrade, Fix Checkout Issue

Closed - This job posting has been filled and work has been completed.

Job Description

My website needs upgraded from Opencart 1.5.3.1 to 1.5.5.1. After the upgrade, verify USPS shipping domestic & international is still functioning by weight, verify if upgrade has fixed i current PayPal checkout issue (new customers can check out but current customers cannot), install social media buttons on items if not part of the new upgrade, discuss "new arrivals" tab, bing index issue, basically a clean and polish of the site.