Hey Murat,
You’ll need a fresh or already-existing WordPress installation with All-In-One WP Migration installed in order to import a .wpress file.
First, make sure you export a .wpress file from the site you’re trying to move. Make sure it’s under 512MB or you’ll have to buy the Unlimited Extension or perform a manual Search & Replace.
Then, edit your DNS Entries/set-up your new Domain/use cPanel or whatever the hosting/domain company uses to change your Main Domain.
Now, set up a fresh WordPress installation. I’d create a new directory inside of /public_html, and move your old WordPress installation to that new directory. It’ll be much quicker than waiting for your server to delete all of the files. Also, if shit hits the fan, you still have your files on your server and won’t need to wait for them to re-upload.
Then, in your now-WordPress-less /public_html directory, upload a fresh copy of WordPress, and set up a new Database.
Install WordPress, login, install All-In-One WP Migration, and import the .wpress file that you exported from your previous site. Log-in using the Credentials from your old site, and save your Permalink Structure twice. Your site should be up and running!
You could also just perform a Search & Replace on your site’s database, and change your Home URL and Site URL in the WordPress settings. Then you wouldn’t have to worry about setting up a new WordPress installation. You’d just have to point your new domain towards your hosting. I’ve never performed a Search & Replace with this plug-in. I started using this plug-in to avoid having to do all of that! It’s worked for me every time.
I’d spend the 5 minutes setting up a new WordPress installation, and letting the plug-in take care of it all. Rather than performing a manual Search & Replace, forgetting an extra “/” in your URL, and now your installation is messed up and you have a migraine. Or doing something out of order and now your site is inaccessible.
Hope this helps a little and have fun,
J