[Hummingbird Pro] Problem hummingbirg - Minification - Break site

Hello,
I contact you as I have a problem with hummingbird.
I don't understand the way it minifies the html, js scripts and css, as when I check the source the HTML is not minified at all, cannot combine the css and js...
But my main problem is my theme style is broken when minify.
Any way to be able to disable the minification? or control it?
In the advanced tools asset optimization even I don't change anything I have a problem with the style of the theme when minified and the report shows my page are minified!

Also taking into account my server is under ngnix and http/2 protocol can I combine hummingbird with another plugin to be able to combine and minify correctly? if yes which plugin you recommend?

Thx