How to set currency on my specific URL?

Hi,

How do I set to my currency (EUR) is set to the following url: isbad.se/en ?

Because now when i switch between my two language on my homepage (swedish and english) is sets two differents urls:

1. https://isbad.se/?wmc-currency=SEK
2. https://isbad.se/en/?wmc-currency=EUR

This works i guess but I would also like to have it correct on the following urls:
1. isbad.se – this should shown SEK
2. isbad.se/en – this should shown EUR

And as from now when you come from google and visit isbad.se/en directly the url shown SEK instead of EUR, I have to first switch language back and for the currency to work correctly.

Can you assist me in this?