The Personal Area is not the only place you can change your MetaTrader4 password. You can also change your trading password within the platform.
Here are four simple steps:
1. Once logged in to your MetaTrader4 platform, please, find the "Tools" menu and click "Options" there:
2. In the "Options" window, please, click the "Server" tab to bring up your account details, then click "Change":
3. Once the "Change Password" window pops up, in the provided field you will need to enter your current password and your new desired password;
4. Do not forget to click "OK" to save the changes!