Now hit your domain on browser like, your_main_domain.com first, the following page will be appeared. Now follow the below steps.

In this section, the admin or company owner has to provide the basic information like username, email, phone number and password to activate the website.

Please fill out proper AWS bucket information. Click Here for proper instructions

Go to your cPanel or server panel. Click your backend folder.

Then you will get this kind of pop up, follow the instructions in the picture.

Then click on the Restart button.