Which settings have you enabled. Are you using any other caching plugins?
Hi I keep most function as default, not sure what exactly caused issue, I don’t use any other caching plugins.
Activated plugin see pic : https://snipboard.io/pxAb7X.jpg
https://snipboard.io/pxAb7X.jpg
deactivated plugin see pic : https://snipboard.io/pxAb7X.jpg
https://snipboard.io/pxAb7X.jpg
Apologies, when I click on the links you have provided I get the following: https://snipboard.io/VMtUHT.jpg
Can you try uploading them again?
Under Minify >> Process JavaScript files, can you deactivate the option to process JS files and see if your banner appears?