I go to download or update an application And it tells me to tap continue & in to view billing information I am already signed in how do I fix this problem

The message is confusing. Many have posted similar questions and I suggest you send feedback to Apple about it (I have). There is also no mention in any support documents what "verification" actually means. Feedback to: - http://www.apple.com/feedback/itunesapp.html

I am guessing it means they want you to verify your payment information is up to date.* See if this is what they want: Change or remove your payment information from your iTunes Store account (Apple ID) - https://support.apple.com/HT201266

and if it doesn't help then: iTunes [Store] Support - Use this form for assistance with account and billing, code redemption, or purchase questions - https://ssl.apple.com/emea/support/itunes/contact.html

* E.g., https://discussions.apple.com/thread/8311981?answerId=33131818022#33131818022

Perhaps they should say "press ok" since there is no option to press continue.

I also have this problem. I have spoken to Apple numerous times over the past few days regarding problems with my login. My phone says I am logged in. But any and all purchases - free purchases, updates - none will download.

ridiculously bad messaging. When I click ok - I expect some form of "here - please enter the missing information".. not a random "ok".

Apple. Fix this.