You can donate in different places across the app:
Option 1:
Play Screen: While listening to a track, "Follow" the teacher to reveal the "Donate" button in the upper right corner. If you're already following the teacher, the "Donate" button will be visible.
Option 2:
During a Live event: Enter the live event and click the "Donate" button in the upper right corner.
Option 3:
Teacher Profile page: Visit the Teacher Profile and follow the teacher. Once followed, the "Donate" button will appear below the three-dot menu.