Your trading account password and your NAGA Account user password are not used for the same purpose.
1️⃣ NAGA Account user password is used for you to login to your NAGA Account via naga.com/login.
2️⃣ Trading account password is used if you decide to trade at NAGA directly from MT4 or MT5 and you will need it to connect your account to MT4 or MT5.NAGA directly without it.
🧑💻 Learn how to connect your NAGA account to Metatrader here
We recommend you to not have the same password for both.