1. Go to Communities > Special Events > Friends Asking Friends > Kintera Thon
  2. Hover over the Thon name
  3. Click: Properties
  4. Update the Display Name
  5. Save
  6. Hover over the Thon Name
  7. Click Website Info
  8. Click: Publish This Event Now

If that does not work: 
  1. Go to Communities > Special Events > Friends Asking Friends > Kintera Thon
  2. Hover over the Thon name
  3. Click Website Info
  4. Click Event Text
  5. Under "Enter Custom Header Text" enter "Welcome to the Donation Page of<br>{Participant Name}" in the text box
  6. Click Save
  7. Update your event