Problem fixed. I deleted the app on my new iphone and re-downloaded it. I was able to login to Evernote on my iphone and it is now working. I believe the problem was the the app was automatically downloaded to new iphone during transferring apps from my ipad. I had not set a pin for it on the new iphone. Probably, if I used up all my pin tries, I would have been given the opportunity to login with my password and that should have solved the problem.