hi,
try to enter to “my client” menu in administration panel and see this:

Parse error: syntax error, unexpected T_BOOLEAN_AND, expecting ‘)’ in /var/www/u0115107/data/www/myvesper.ru/admin/controller/customer/customer.php on line 1105

The part of code:
Line 1102: foreach ($custom_fields as $custom_field) {

Line 1103: if (($custom_field['location'] == ‘address’) && $custom_field['required'] && empty($value['custom_field'][$custom_field['custom_field_id']])) {

Line 1104: $this->error['address'][$key]['custom_field'][$custom_field['custom_field_id']] = sprintf($this->language->get(‘error_custom_field’), $custom_field['name']);

Line 1105: } elseif (($custom_field['type'] == ‘text’ && !empty($custom_field['validation'] && $custom_field['location'] == ‘address’)) && !filter_var($value['custom_field'][$custom_field['custom_field_id']], FILTER_VALIDATE_REGEXP, array(‘options’ => array(‘regexp’ => $custom_field['validation'])))) {

Line 1106: $this->error['address'][$key]['custom_field'][$custom_field['custom_field_id']] = sprintf($this->language->get(‘error_custom_field_validate’), $custom_field['name']);
}