if you have a problem with the payment password, then try this, it helped me :
Please follow these instructions to Change Transaction Password:
Step-1(Computer) Click on profile arrow Down which is on top Right-Hand side.
(Phone) Click on account which is on Bottom Right-hand side
Step-2 Click on "Security Settings" go to "Transaction Password"
Step-3 Set a new password, confirm it, and provide the OTP. Click "Confirm" to successfully change your Transaction Password.
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