You should be able to find the answer to that question by searching the internet (with google dot com or duck dot com); or go to the 7-11 web site, then contact their corporate headquarters.
Why is it “right” or “wrong”. They are a global chain and not that much different from similar convenience markets already operating all across EY. They do not present themselves as kosher or shomer shabbos so I’m not sure what problem you have.
There are 7-11’s in frum neighborhoods in the Five Boros. The one with which I am familiar has a hecksher from, I think, VHQ. What is the issue in Eretz Yisrael?