[resolved] sample image does't shot after adding to Theme Panel – Ads

Hello,

I might be missing something simple. Following the tutorial from the documentation here, the sample ad doesn’t show. I also add the same sample code to the rest of the items in Theme Panel – Ads. They also do not show. Can you please assist?

Thank you!

edit:

It turned out someone has manually added the sample code in editor instead of using the Theme Panel – Ads