Apply wholesale group price with the Extended Pricing Module

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Silverstripe Version:
3.2.2

Question:
I am integrating extended price module to apply some special price for some group.
Module github code here:


This also be related to this topic:

It working great in local, price for wholesale group applied and payment working great, but in live, all price display look correct, checkout page also fine, but after payment, the order display incorrect, order item get Base Price in product, not using wholesale price.

We are using Payment Express as 3rd module for payment.

Not sure where is the problem.

My yml config:
```
Product:
  extensions:
    - HasGroupPricing
HasGroupPricing:
  price_levels:
    wholesale: WholesalePrice
  field_labels:
    WholesalePrice: 'Price for wholesale customers'
```