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56 minutes ago, riderlol said:

Exactly, that's why it is necessary to be able to choose that the master address for calculating VAT is the billing address. 

Now from what I know you need to change in Prestashop International > Taxes > Tax Options > Option Based on, change to billing address (attachment). Now the Module should use the billing address for VAT.

The second thing is to set it so that the Prestashop checkout does not allow adding a shipping address other than the ones given in the examples above.

If you are using OPC The Checkout, I think the module developer will configure this for you using custom code (I don't know about other OPCs).

53 minutes ago, riderlol said:

Exactly, that's why it is necessary to be able to choose that the master address for calculating VAT is the billing address. 

Now from what I know you need to change in Prestashop International > Taxes > Tax Options > Option Based on, change to billing address (attachment). Now the Module should use the billing address for VAT.

The second issue is that the Prestashop checkout does not allow you to add a shipping address other than the examples described above.

If you are using OPC The Checkout, I think the module developer will configure this for you using custom code (I don't know about other OPCs).