Sorry, i can`t share my website link, but i can give you steps to reproduce
This snippet is drawing the subscribe form:
<?php echo do_shortcode('[email-subscribers-form
id="1"
button_label="' . $subscribeLabel . '"
email_place_holder="' . $subscribePlaceholder . '"
]') ?>
But plugin is ignore “button_label” & “email_place_holder” attributes.
File – wp-content/plugins/email-subscribers/lite/public/partials/class-es-shortcode.php
Function – public static function render_es_form( $atts )
This function totally override $attrs variable by this code:
$atts = shortcode_atts( array(
'id' => '',
'show-in-popup' => ''
), $atts, 'email-subscribers-form' );
So, when render_form( $form_data ) function is calling, this attributes is always empty and set by default value.