Hi tried to access yahoo email on my ipad this morning, was sent to a page listing email sites, iCloud, yahoo, etc. Was asked to select the site. I selected Yahoo, was then asked to enter email address, password, etc. a message then appeared saying this site was already registered on the ipad. The only available option was cancel which took me back to the first page. I have tried deleting cookies and setting safari to never block cookies, but still have same problem. Any suggestions would be gratefully received.