https://opencartforum.com/topic/20909-vopros-po-chekautu/
Спасибо большое. Показали в каком направлении копать.
В файле /catalog/controller/checkout/success.php заменила
if ($this->customer->isLogged()) {
$this->data['text_message'] = sprintf($this->language->get('text_customer'), $this->url->link('account/order/info&order_id=' . $this->session->data['last_order_id'], '', 'SSL'), $this->session->data['last_order_id'], $this->url->link('account/account', '', 'SSL'), $this->url->link('account/order', '', 'SSL'), $this->url->link('account/download', '', 'SSL'), $this->url->link('information/contact'));
} else {
$this->data['text_message'] = sprintf($this->language->get('text_guest'), $this->session->data['last_order_id'], $this->url->link('information/contact'));
}
на
if ($this->customer->isLogged()) {
$this->data['text_message'] = sprintf($this->language->get('text_customer'), $this->url->link('account/account', '', 'SSL'), $this->url->link('account/order', '', 'SSL'), $this->url->link('account/download', '', 'SSL'), $this->url->link('information/contact'));
} else {
$this->data['text_message'] = sprintf($this->language->get('text_guest'), $this->url->link('information/contact'));
}
Теперь все ссылки на своих местах.