I had a strange experience recently with an Airalo eSim I bought for Portugal. The eSim made Google come up in Polish. Also when I went to some sites like hotels.com the prices came up in Polish currency. I could change the language for Google but only to Portuguese which wasn’t much use to me. I think I could have changed language to English if I had signed in to Google but I didn’t do that. Also it is hard to navigate the menus in Google when they are in Polish or Portuguese. I have used Airalo many times, not had this problem. Problem went away as soon as I turned off the eSim. Also I noticed a change in the installation process for that eSim and for one I just bought for Spain. I use the QR code to install. Hit enter twice. The eSim installs but then tries to initiate. After quite a long wait it says unable to initiate. When I arrived in Portugal and turned the eSim on it initiated itself quickly and worked normally.