Fix Magento Bugs

We are facing some bugs on our Magento site that a previous Freelancer here coded for us a couple months back. Some of the new products added do not show the size option for customers to select. We have tried to create new products and choose the sizes for the products to show up and it does not show up on the product listing. Need this to be fixed today. Its a small bug so should be easy for a professional Magento coder to fix. Site link will be provided via PM.