Commenting out:
if ( isset( $wp_customize ) ) {
$css .= raindrops_embed_css();
}
…in function.php of theme fixed it.
Thank you kindly. 🙂
I’ve taken down the test page, sorry for the 404.
I’ve sent an email to support to get help.
Thank you for the quick reply!
I should clarify, I have the paid-for countdown control plugin.