You can easily change the account owner from within the Formotus portal Dashbaord. You can only change owners to an existing administrator user.
HOW TO CHANGE ACCOUNT OWNER
1. From the Formotus Dashboard, hover over your profile name in the top right corner
2. Select Settings
3. Select the new owner. Administrator users will be shown in the Change Owner dropdown. Choose a user, select OK, and your account owner will be changed.