shippo API settings are saved but you can't use them.
As they are saved into one table and selected from another.
settings are saved into the table, and model_settings are selected from the table
Here are the changes, I had to make them to the code:
to see this: https://www.screencast.com/t/uBXbs41reA
And one more question: Shippo allows to formalize international transportations. How can we set this up? The code of declaration issue is required for this, and this code is simply not available.