Can't get any articles from my exclusive subscription authors. Everytime I click thru one of the exclusive emails. It wants me to install the same app which is already installed. THIS app is worthless.

When landing on the browser to read the article, tap the orange banner on top that says: "Already have the app? Tap here to open".

Usually the bowser would ask you how would you want to open link like that in the future: App or browser. You might have chosen the browser on the past and the device remembers.