To claim an Instant Payout, you have to confirm your identity by providing some kind of information that both you and the Payout Issuer know (e.g. phone number, claim ID, etc.).
If a Payout Issuer has sent you a payout and you don't know the answer to their security question to confirm your identity, reach out to the issuer directly and let them know. Payouts Network cannot provide you this information.