Datagrid not working when online

Hi.

So, I have a simple registration form with a datagrid underneath. When you register, your name shows up in the datagrid. It’s a list of people who has registered.

This all works just like it should when tested locally. Online though, you can only register, but the datagrid won’t load the names. It’s empty, even though the database has been updated.

I don’t recieve any error messages.

What is wrong?

/ Frank