I sell handmade perfumes online. A freelancer built my site for 3000 dirhams but the cart crashes every time I add a new product. Customer orders get lost and I have lost trust with many buyers. Now I am searching for the ecommerce web design Dubai that builds stores which actually last. How do I check if their code is clean or just a quick fix? Should I ask for a list of stores they built two years ago to see if those sites still work properly without issues or ongoing fees?