André Gaudencio on "[Plugin: WP Super Cache] How can use 'Preload Mode'"

Hi!

I tried to use the Preload cache but in one of my sites nothing happens. The cache is not created.
There is some conflicting setting?

http://www.encontraabcd.com.br/cache-1.jpg
http://www.encontraabcd.com.br/cache-2.jpg
http://www.encontraabcd.com.br/cache-3.jpg

Should I delete all existing cache before create a preload cache?

Do you have any suggestion for my configuration?

Tks!

https://wordpress.org/plugins/wp-super-cache/