Hi Rose,

Thank you for clarifying this.
So, I did what you suggested but nothing happens.
Let me show you

Theme Options > WooCommerce (Shop) > Single product page > Single product layout > Location Of Upsell Products > Sidebar.
https://www.screencast.com/t/0HRh3okOV

On the product page, select upsell or cross-sell
https://www.screencast.com/t/uhJvewIKX

Sidewidget
https://www.screencast.com/t/WbXkxrTU0REz

Product page
https://www.screencast.com/t/dsVkncMkC

As you can see, it is not working. Maybe I’m missing something, maybe I need to add an additional step?
I went to the woocommerce support and they said that this problem could be because of the theme. I’m not sure about that, could you please take a look?

Please advice.

What, but why?
Why would I downgrade? Can you work on this issue and pair with wp?