So this is my issue: I'd like to disable the Ad Tester on a specific post and just add a custom placeholder manually on that post.
I go to MONETIZATION > DISABLE ADS BY PAGE and choose the post where I don't want the Ad Tester to run. Then I insert the placeholder on a WordPress Gutenberg HTML block inside that post, but the ad doesn't appear.
Instead of doing the steps above, if I go to CONTENT > EXCLUDED PAGES and type the post to exclude, and then I insert the placeholder manually on the post, the ad doesn't appear also.
How can I make this work? And what's the difference between DISABLE ADS BY PAGE and EXCLUDED PAGES?