I checked several pages here and the DOCs but saw no instructions what permissions should be set for the plugin files. On my test server the "Test Email Settings" pop-up works. On a live server no pop-up for Test Email Settings and the Custom CSS box does not save settings. I see on the test server some files are 744 but on the live server the same files are 644. So I think maybe the live server file permissions are wrong.
Is there a list of what file permissions should be?
Thanks.