I cannot add the PLUS benefits because when I go to the purchase page it wont recognize my phone number!

Well, I dont know how to answer that, because in my two comments above I state: "... I am UNABLE to enter ANY data in the cell AT ALL...." that means no. Regard...

Also, auto fill correctly enters the correct info on the purchase page, including the correct phone number, but red text beneath the cell claims the number is i...

Wrong. Obviously you didnt read the entire question. The number IS valid and the same one used for my account. Not that it matters because I am UNABLE to enter ...