I just upgraded to iPadOS 18.2 last night, and just tried to open the News app this morning and was frustrated because it would not open. My wife, who upgraded as well, does not experience the problem on her iPad.
I searched online for "iPadOS 18.2 news app not working" and -- lo and behold -- this thread was the first hit. I saw the comments referring to iPad Gen 7, and a quick check of the settings confirmed that that is my model. My wife's is a later one, go figure. So I am cursed like the rest of you. LOL!
I'm glad to know I am not he only one, although I am not too happy to know that it has been going on for over a week and still not solution is in place.
I tried all suggestions mentioned here, and none of them worked. Unfortunately, I too have an Apple News+ subscription, so that's adds insult to injury.
Thank you all who provided context of the problem, suggestions, and feedback from Apple Support.
I'm off to open a support ticket with them now ... wish me luck! (Eek!)
dZ.