Turn on allow unfiltered HTML in ACF save form.

/**
 *
 * Turn on allow unfiltered HTML in ACF save form.
 *
 * @return true
 */
function videotube_filter_acf_allow_unfiltered_html(){
    return true;
}
add_filter(  'acf/allow_unfiltered_html' , 'videotube_filter_acf_allow_unfiltered_html', 10, 1 );