Login to your Pixelfy account, click on your user name at the top-right corner of the screen, and, from the drop-down menu, click on the option that reads "Profile"
Next, from the options on the right side, select the option "Manage password"
On that page, you will need to enter the new password you'd like to use and confirm it. After that, simply click on "Update password"
And that should do it! You have successfully updated your Password!