Website Maintenance

I run an E-Commerce site that needs web maintenance. My web builder went out of business over a month ago and failed to notify us.(this is urgent) My website currently needs updates, and has a few issues that need to be fixed. Issue #1 : Customers can't submit orders due to a server error. Issue #2 : I can't cancel client subscriptions due to a server error. I am looking for someone who can check up on the site once every 2-3weeks. I am on a WordPress platform hosted by GoDaddy. The website is www.ress4u.com.