Just gave this plugin a try and it seems to be just not working.
I saw there are a few similar posts but I'm not seeing any answers. I installed and setup the plugin, check the contents tab to see '0 pages cached' all the way down.
I went ahead and turned on debugging, just like a lot of other people I'm getting:
Buffer is blank. Output buffer may have been corrupted by another plugin or this is a redirected URL. Look for text 'ob_start' in the files of your plugins directory.
Then, and here's where I'm getting frustrated, I went ahead and one by one checked and the disabled every single plugin on my website. After disabling all 12 plugins, I'm still getting the same error. I was ( I turned then back on for now ) legitimately running WP with no other plugins and still getting that error message.
Any help would be greatly appreciated. And my pages aren't redirects.