For changing logo, this is what your FAQ said:
Open files: themes/theme_name/views/layouts/main.php and themes/theme_name/views/layouts/compare.php.
Find the line "logoopenore.png".
Replace with your file, having uploaded it through FTP server beforehand.
Note that in themes/theme_name/views/layouts/main.php and themes/theme_name/views/layouts/compare.php, there is no line "logoopenore.png" in dolphin
Thank in advance for your support
BR // Djakaridja