Set Preferred Language to English - United States

If you notice European spelling of some words (ex) enrol) in your Moodle, you may want to set the preferred language to English- United States in your profile.  

Step-by-step guide

1. Log into Moodle.  From your profile icon in upper right, select Preferences, and the User.  

Select Preferred language. 

2. Select English - United State (en_us). Save.