So i have found a workaround.
you have to add the parameter $atts in line 254 and 255 in wp-overlay.php
So they look like this:
$ihover = new Ihover_Circular_Image_Hover_Effects($atts);
$square = new Class_Square_Image_Hover_Effects($atts);
additionally i got errors in line 727 So i took a RefflectionClass to get rid of the problem.
$reflobj = new ReflectionClass($mark_up_class); //this line is new
$obj = $reflobj->newInstanceArgs($atts);//$mark_up_class;
at some point, in the Plugin settings, i got also an error in modules/settings/views… but i forgot the exact spot. I added there just the $atts parameter.
I don´t know if the plugin is fully functionally, but as far as i needed it, it’s good enough.