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Even though your site has been successfully restored, differences in server configuration over time or between different servers (of the same or a different host) can cause issues with your restored site. While we cannot provide support for such issues, we have collected the most common problem causes (and their solutions) in our troubleshooter documentation. For your convenience, we are providing you with the link to this document:

As long as the installation folder exists on your site, Joomla! will not load and ANGIE (this site restoration script) will be shown again whenever you're trying to access your site. You will have to remove this directory using one of the following ways:

You may want to print out this page for your reference.