Usually, fontawesome works fine but depends on your site. What is your site url?
True, I described badly the problem, icons in my theme use other library, not font-awesome. I mixed up the themes.
All text icons in this page are gone, eg: http://1club.com.br/
Thanks for help.
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This reply was modified 8 years, 4 months ago by
killjack.
I don’t see anything out of common. It may be some conflict when merging js or css files.
Solution is to try to disable js processing, then enable it back and try to disable css processing. Once you find out which one makes it work, you will have to try using the ignore list on the plugins settings.
https://wordpress.org/plugins/fast-velocity-minify/#faq
After installing, why are some images and sliders not working?
If you cannot find a way around it, I would suggest hiring a developer or you can try the autoptimize plugin instead.