Through your account:
- In your account go to PRODUCTS > SHARED HOSTING.
- Go to the section: Active products and click on Manage on the right of the corresponding domain.
- Click on MANAGE under Control Panel.
This opens a drop-down menu.
Click on "Edit Profile".
There you can see your username and enter a new password or automatically generate one. Click on Show to see it.
Click on "Apply" to save the changes.
Directly through the Plesk login page:
The link to the Plesk login page is: https://plesk-euc1-b52.eurodns.host:8443/login_up.php
Enter the username and the password and click on "Log in".