You can edit your agent profile in the Boost dashboard. Tap on your name in the top right hand corner of your dashboard and choose "Account Settings"
You'll be brought to your profile page to edit your contact information and photo that will be shown on your ads and landing pages:
NOTE: You may only see the ability to edit your photo and name. If this is the case, it's because Boost is receiving all other contact information for you from a feed provided by your brokerage. If you're not sure where to edit the rest of your profile information, please reach out to your company's Boost administrator for help.