Have you tried to cross-check the details below and are still facing an issue?
1. In case you have logged in from a new device, you cannot add/change your bank details for 24 hours from the time of login on the new device.
2. You will be able to change your bank account only 5 (five) times.
3. Your bank server might be down/slow. Please try after some time.
Note: Ensure that the name on your bank account matches exactly with the name on your PAN card.
If YES, please click here.
If NO, please follow the steps above.