Shipping method not correct in checkout

-- HikaShop version -- : 3.2.0
-- HikaMarket version -- : 1.7.3
-- Joomla version -- : 3.7.5
-- PHP version -- : 7

Hi,

I have 3 different vendors, with different shipping methods and different payment methods.
The assigment of the payment methods work: when assigning a method to (for example) Vendor 3 ...then the chosen payment method is used in the checkout correctly for this Vendor 3.

Unfortunately it does not work with the Shipping methods:
- When I assign a product ("Product Vendor 3") to Vendor 3
- Then assigning the Shipping plugin to Vendor 3

Result in Checkout:
The desired Shipping method is not found - "No Shipping method chosen"

When I change the plugin(s) to "Vendor= None"... then the Shipping Methods are all available in checkout.
But this is not helpful, I need different Shipping methods for different Vendors of course.


Thanks for your help!