Is it possible to switch configuration scope/store when executing a module?

[f1-outsourcing]

I have created a module that does a remote api request, and configured this module under website_a

Now I create an order in admin, I choose a website_a view, select the product.

When I click submit order, the module api request fails with an authentication error, because it is not configured in the configuration scope 'Default Config'

How should I change my observer.php so it gets the website_a from the order, sets this as a default 'environment' and then executes api requests?

Is it even possible to change the 'environment' from a configuration scope 'Default Config' to a configuration scope 'website_a'?