1. Navigate to Communities > Special Events > Friends Asking Friends > Kintera Thon 
  2. Hover over your event name and select Website Info 
  3. Click Website Features 
  4. Under Login, mark the radio button for "Display only Sphere standard login option."
  5. Click Save 
  6. Navigate back to the webinfo Checklist and click the green Publish This Event Now button 

Note: This will also remove the social media login option for participants to register using their Google, Facebook, Twitter, etc. accounts. If you would like to keep the social media login option and remove the pop up window, please Chat With Support and reference this Knowledgebase article.