If I specify a config in "nginx Directives" and i save the config, everything it's ok. But after updating the configuration ans save the changes everything looks ok and if you refresh the page it's seem to be ok, but in the config files "/etc/nginx/sites-available/" you can see that nothing changes. I am not even able to find a log or something related to the error. Thx in advance for your time and sorry for my poor english.
What is the directives that you intend to add? I have no problems adding nginx directives so far provided they are correct.