Undefined icon on release apk


Hello eveyone! Currently I’m developing an app and I’m on beta testing stage. I’ve build and signed my release apk and published on google play. However, when I installed the release apk I’ve notice there are undefined texts where should be an icon. I’m using Nathan’s nativescript-fonticon plugin to display font awesome icons. It’s worth mentioning that the plugin works beautifully on the debug apk, but for unknown reasons I can’t get the icons displayed on a release version.

Has anyone faced something similar? Best regards.

Edit: forgot to mention…I’m using ns + ng2