Issue displaying banner on taxonomy pages

Hi,

There is an error in simple-banner.php which prevents the banner displaying on taxonomy pages.

When on a taxonomy page and no pages have been disabled the result is this:

get_option('disabled_pages_array') // ''
get_the_ID() // false

resulting in the following unexpected behaviour:

$disabled_pages_array = explode(',', get_option('disabled_pages_array')); // ['']
$disabled_on_current_page = !empty($disabled_pages_array) && in_array(get_the_ID(), $disabled_pages_array); // true