Zend certified PHP/Magento developer

Multi-website redirects to main domain

In the same Magento instance I’ve configured two different Websites with only one Store and two Store Views for each Store.

Website 1 -> Store 1 -> Store View 1

Website 1 -> Store 1 -> Store View 2

Website 2 -> Store 2 -> Store View 3

Website 2 -> Store 2 -> Store View 4

and following this guide (https://experienceleague.adobe.com/docs/commerce-operations/configuration-guide/multi-sites/ms-nginx.html?lang=en) to Set up multiple websites with Nginx

Now, if I try to navigate:

domain1.mg -> OK!

domain1.mg/storeview1 -> OK!

domain1.mg/storeview2 -> OK!

domain2.mg -> KO! It redirects to domain1.mg/storeview1 (default storeview)

domain2.mg/storeview3 -> OK!

domain2.mg/storeview4 -> OK!

why this behavour?