a2Optimized and 403 Forbidden You don’t have permission to access this document

please help!
I made “enable” A2 pluggin involves “Deny Direct Access to Configuration Files and Comment Form
Configured
Protects your configuration files by generating a Forbidden error to web users and bots when trying to access WordPress configuration files.
Also prevents POST requests to the site not originating from a user on the site.
note: if you are using a plugin to allow remote posts and comments, disable this option.”

I lost access to all my configuration file and my websaite doesn’t work too- displays :403 Forbidden You don’t have permission to access this document”

Please look: akojarocin.pl
what can I do?? please help:((((