Some additional details as per t&c and other details.
1. Max credit limit that can be approved is 7 Lakhs.
2. Linking the Edge CSB Bank Credit to other UPI Apps (Like PhonePe) will not be guaranteed for cashback. You have to use Jupiter app for UPI transactions.
3. For the referee benefit (500 rupees ? ), Looks like you have to do UPI Credit card transaction of Rs. 2000 or more, from the Edge CSB Bank Credit Card on Jupiter App.
4. I tried a transaction on Myntra. For the payment, I opted for phonepe, where my csb edge+ credit card is already added, and I used the card. However I don't see jewels got credited for this transaction.
I think you have to add the card for the payment, not do the payment via PhonePe/Gpay credit card option.
Send a DM , if you need a referral code.