This can happen if the participation type of the participant does not have fundraising enabled. Follow the below steps to check this:
  1. Locate the TeamRaiser and click "edit"
  2. Click on Step 7, Manage Participation Types
  3. Next to the participation type click "edit"
  4. Look at option #5 "Fundraising Enabled". If this box is not checked, the participant's fundraising total will not show up on their team page, as it is assumed that they are not going to be involved in the fundraising process