Visiting the site simply reloads BRS. The idea here is that when there is a directory named installation, Joomla will redirect to it. BRS extracts into a directory named installation.
The only thing I can think of is that your issue is either related to timing or the session. Try clearing all cookies for your domain before starting the restoration. If that works, the problem is related to session handling in PHP. The solution is deleting said cookies before running the restoration. Otherwise it would be something related to your server configuration and the timing of the restoration. In this case all I can think of is wait a bit before continuing with the restoraiton.
Nicholas K. Dionysopoulos
Lead Developer and Director
🇬🇷Greek: native 🇬🇧English: excellent 🇫🇷French: basic • 🕐 My time zone is Europe / Athens
Please keep in mind my timezone and cultural differences when reading my replies. Thank you!