I can't open my mail app
I don't understand why, but since I changed my sim card for a while and then put back my usual sim, my mail doesn't want to open. I am checking daily my mails from my Iphone and now I have to do it from my laptop. The problem is that, when I open the app, is asking me to select one of the mails providers, then I select iCloud, and then, when I log in, it shows me a message telling that "This iCloud account has already been added to your Iphone". I delated the app and download again and the same. Why I can not access to my email? I don't understand and is essential to me. (I am adding a screen shot of what is showing me when I open the app)
Thanks
iPhone 11