Hi @Sheri17,
Are you getting any javascript errors in the console? Not sure why it would cause the slider to fail unless some asset was not getting loaded somehow.
Also, if you’re just adding a id attribute to the body you could do something like this:
add_filter( 'body_class', function( $classes ) {
$classes[] = '" id="your-id';
return $classes;
}, 100000000000);
It’s definitely a hack since it relies on being the last class (hence the high priority) of the filter. If a class is sufficient you could also simply do:
add_filter( 'body_class', function( $classes ) {
$classes[] = 'your-unique-body-class';
return $classes;
});