In the form, when you put a tick there is a link to the page, when you click on the link - for some reason a tick is set and the checkbox class changes, but there is no transition. Who knows how to fix this problem? I tried to remove the opening in a new window - not that does not help.
add_filter('form_field_line','form_field_line_checkpersdata', 10, 3); function form_field_line_checkpersdata($line, $filter, $data){ global $premiumbox; $type = trim(is_isset($data, 'type')); if($type == 'terms_personal_data'){ $line = ' <div class="checkpersdata_line"> <label><input type="checkbox" name="tpd" value="1" /> '. sprintf(__('I consent to processing of my personal data in accordance with Law No. 152-FZ "On Personal Data" and accept the terms and conditions of the <a href="%s" target="_blank">User Agreement</a>.','pn'), $premiumbox->get_page('terms_personal_data')) .'</label> </div> '; } return $line; } Page: bigpay.eu/feedback