Hello:
I have just tried it on Microsoft Edge, which is a browser I almost never use and which I hadn't tried before with Turbotax. I cleared the cache and all cookies. It did the exact same thing as all the other times I have tried to get past the US address step.
I don't know whether it is pertinent or not, but Turbotax autofills the registration address form with my UK address at the beginning of the process, and then after the error message comes up.
