To change your user information on the homepage, navigate to the top right corner where you'll find your username. Click on it to access 'My Profile,' where you can modify your information by clicking on the relevant details. 

If you do not have your password or have forgotten it, see this section or click on "Forgot your password?" on the login page.

If you are already logged in and want to change the password, follow these steps:

1.Go to the homepage and click on the 'My Profile' button located at the top right corner.

2.In the 'My Profile' tab, you'll find the fields to enter your new password after your user information. 

If you want to change your company data on the homepage, go to the top right corner, where you will find your username, and click on it.

At the bottom of this section you will see all your "Company data", click on the information to modify it.