After trying different versions and servers and as my frustration level already arose in the last year, I tried to fix it. I finally found a old version which works. I checked all changes and finally found the bug:
Open functions.php, go to line 1818:
//Cactus_Customizer_Notify::init( apply_filters( ‘cactus_customizer_notify_array’, $config_customizer ) );
and uncomment it. That should fix the issue
you’re welcome @velathemes
