I need to modify the text on my initial login screen. I found this in the Moodle documentation: Site administration > Plugins > Authentication > Manage authentication. Type your help message in there in the Instructions text box. Although I have text currently on my login screen that I need to modify, the instructions text box on the Manage authentication box is empty. Any other suggestions for where to look? Using Moodle 2.7+ (Build: 20140529). Thanks!
Not 100% clear what text you want to change; but guessing it's default text so have a read through here: https://docs.moodle.org/27/en/Language_customization