Where can I check how much refund I received after winning 30 day challenge? Also, I verified that I won the challenge but I didn't receive an email with a certificate.

You will find a credit entry like this in your back-office ledger.

"NSE_FNO 30DAY CHALLENGE FOR THE MONTH OF"

Check this credit entry in your monthly digital ledger statement that is emailed you by the broker.

The brokerage refund gets credited back in the same month when the results gets computed on their portal. https://30-day-challenge.fyers.in/215

Hey @Koustubh Masurkar10,

Apologies for the delay in response. You can check the refund in your Back Office as mentioned by @George Roper14.

Kindly make sure to also check your Spam folder for the certificate. If it's not in that folder, you can always reach out to us at support@fyers.in38. We'll look into it. 

Thanks!