Teachers with existing Kahoot! accounts can join your subscription without losing any progress or content on their own existing Kahoot! account. The process of connecting their existing account to the paid subscription will depend on how they are invited. 

• Invited via unique shareable link: the teacher should choose the option to “Log in” to connect their existing account to the subscription.
• Invited via direct email invitation: make sure the email the invitation is sent to is the email associated with the teacher’s existing Kahoot! account.