&#91;Решено&#93; У заказа отсутствует контрагент

https://github.com/MODX-Club/ShopModxBox/blob/master/core/components/basket/processors/basket/web/orders/submit.class.php
 

14 строчка: protected $allowGetUserByEmail = false;
 менять на true

https://github.com/MODX-Club/ShopModxBox/blob/master/core/components/basket/processors/basket/web/orders/submit.class.php 14 строчка: protected $allowGetUserByEmail = false;
 менять на true