Hi all!
Just a contribution here, after a day breaking my head!
The OWASP rules was notworking, showing only warnings in logs, nothing was blocked.
Before check file orders, configurations, I notice 2 things:
1. The slide that enables modsecurity for each domain was on (green) but no created modsecurity.conf file with SecRuleEngine On. Just Off and On the slide and file was created.
2. The directory /usr/local/apache/conf.d/modsecurity-owasp-latest/rules have 2 files .conf.example. One of those is the MORE IMPORTANT file, REQUEST-901-INITIALIZATION.conf.example. Just copy this file to REQUEST-901-INITIALIZATION.conf
Reload your apache and it's working.