You have 2 different ways to change your password.
Firstly, you can change or reset your password by clicking "Forgot password?" on the main Login page.
To reset your password enter your email address.
A confirmation link will be sent to you. You should just follow the link from the letter to set a new password and log in accordingly.
You can easily change your password in your admin panel as well.
Please note that the security of logins and passwords is the user's responsibility. We recommend you to update your password regularly and create a unique and strong password to protect your data.