Have you read through https://docs.moodle.org/36/en/Installation_FAQ and https://docs.moodle.org/36/en/Unexpected_installation_halts?
Have you looked at your server error logs?
Have you forced debugging on in your Moodle config.php file?
Check the timeout settings in your php settings - might be worth increasing them: https://support.loopia.com/wiki/editing-php-ini/
Did you install via Loopia’s one click install or did you install manually?
According to their website, Loopia claim that Moodle works on their platforms (https://support.loopia.com/wiki/cms-content-management-system/) so it might be worth talking to their support team.