i was speaking to someone on chat a few minutes back when we got disconnected. this site has been down twice, he explained the delay in uptime hence it could be false positive. the site has a low score in long loading time in gtmetrix. he did some tests and several images show non compressed. Not sure why wpsmuch will not compress them. I use WP-rocket on other sites and added your plugins on this site for testing after sign up. GTmetric score have been great with Wp-rocket. But with humming bird js, css will not minify and compress, score is not that great. We would like to get this to work before moving other sites to your plugins.