To set up access limiting rule for chosen page of your domain, select the Free Shared Hosting service in your personal cabinet (https://my.llhost-inc.eu/clientarea.php) and click on "ISP Manager" which will take you to your domain control panel:
Personal profile > Services > Select "Free Shared Hosting" service > "ISP Manager" button
Select "WWW-domains" in the WWW section of the domain control panel and then click on the "Access limits" button at the top:
Click on the "Add" button and then specify which directory you want to restrict access to:
Next, you need to create a user who will have access to the directory that you selected:
After you press the "Done" button, you will be returned to the list of rules you created to restrict access: