Create account and change nameservers in domain

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Now click on “Update Name Servers”, after that wait some hours for the nameserver change to propagate; afterwards you can add your domain to a hosting account or create a new hosting account with that domain, log in to the Control Panel to enable all functions, then follow this to upload your files with FTP:

How to upload files with FTP

The best and most reliable way to upload files is to use FTP. To upload files with FTP, you will need to following: Your FTP username Your FTP password The FTP hostname An FTP client You can find your FTP username, password and hostname in the client area under the FTP Details section. The FTP password is the same as your hosting account and control panel password, which is different from the password for the client area. If you like videos better then text guides, you can find one at the bot…

If you want to transfer your existing site to here, follow this, which is also what I sent before, after you set up a connection with your FTP client:

How to migrate your website to InfinityFree

If your website doesn’t use MySQL databases, moving your site is very easy. Simply upload all your files to the ‘htdocs’ folder on your hosting account with FTP or a file manager. If you have a PHP based website, check if it has any configuration files where a domain name or file path needs to be set. Update these values as required. If your website is using MySQL databases, you need to move the database contents as well and update the configuration of your website to use the database: Backup…

But since you also have an Android device, looking at the last screenshot you sent, you might also be better off using another FTP client compatible with Android if your website files are on there (because FileZilla doesn’t have an Android version).