I'm using moodle 2.2.7 and I am currently getting a few complaints about users not being notified before their course is about to expire. I have followed the supposed steps to where the setting to send a notification is, but I don't have the option to use the setting. It just isn't there! It's so frustrating and I can't find any documentation to help me with this topic! Is it because of the version I'm using? or is there something I can change? Any advice would be greatly appreciated.
It is indeed because of the version you are using. If you can upgrade to Moodle 2.4 or later, you'll find a "Notify before enrolment expires" setting, as mentioned in the documentation Self enrolment.