My Ionic2 App is not building the changes I make to the code


I am fairly new to the Ionic framework and Cordova. I used a Facebook/Twitter/Google login theme called Login2. When I try to make changes to the code to customize the theme, those changes do not reflect in the app when I build it. I don’t understand why this is happening. I am obviously working in the correct directory. The original Login2 builds and runs fine, but any changes I make to the HTML do not show when I run it. I tested it on Genymotion, my Android phone (HTC One Mini), my co-workers iPhone and on the web via the ‘ionic serve’ command. If anyone could help me out with this, I would greatly appreciate it.