$0 at signup
No challenge fee is collected when you register, so there is no upfront challenge payment to refund.
Authorized challenge fees
Your exact maximum fee is disclosed before you approve it. Collections may occur in one or more transactions after authorization, including before or after passing, and cannot exceed that maximum.
Network charges
Blockchain network fees are set by the relevant network and are separate from the challenge fee.
Revoking authorization
You can revoke a wallet permission using your own wallet tools. Revocation prevents future use of that permission and may affect access to an active challenge.
Payment questions
For questions about a completed collection, contact admin@ftmozero.com.