Cannot add product to each step (Does not work)

Hello, how are you? I just bought this add-on, we installed it on our website. But we have this problem

Each step we select is only added in a cart and not as in the live sample.

I select the Processor and it does not jump to the second option nothing happens. Look HERE https://prnt.sc/ts25b2

We try to configure it not to work as in the live sample.

I hope your prompt help

Thanks and regards,