When will the return system be open? I need to return a product that was supposed to be in the box but I got food cans and a lid of some sort instead.

Call the customer service department or try asking a GM, but try Walmart customer service 800 number first or email.

They're always open but not until 8am I believe

It should now be open for you to do your return

I had no idea that you were experiencing issues related to the return system because I have not tried to return anything lately and was not aware that the system could possibly be down. I’m not sure what location you were trying to use or return it but call the location you were going to return it and make sure their system is up if you were experiencing issues.