Iphone 6 plus wont allow yahoo email to work nor update

Question

I have several email accounts I use with my iphone 6+ and I realized I hadn't been receiving emails from one of the yahoo accounts, I signed in on my imac (and I can on my ipad as well) and I had missed about 10 days of emails.  I can send emails from it but cannot receive with it.  When I open account it doesn't show any "inbox" or "saved" or past "sent" emails, etc.  I've read on this site to delete the account and re-add it.  I've done that several times. I've changed the password, I've tried everything I can think of.  Also the account shows updated "Nov. 30, 2014" and despite deleting and re-adding the yahoo email account it never shows current, always Nov. 30th? I added a Yahoo App and I can access my Yahoo email via that, but I can't use it on the iphone as the default email.  I've checked for the ios update, I am current, I've backed up the iphone on itunes.  I've re-booted the iphone, simply put this iphone wont recognize this mail account. Other Yahoo emails continue to work fine on this same iphone, but not my primary email account.  HELP!

Answer 1

Try this fix.
-->>you'll need a computer to log in to you yahoo! mail.
-->>after logging in with you username and password (computer) on the top right you'll see "Hello (your name)" CLICK ON IT
-->>on the left panel you'll see "account security" CLICK ON IT
-->>check iF you have  "Two-step verification  Additional security." TURNED ON
HERE'S THE PART TO FIX:
if you switch it OFF you can set up your yahoo mail on apple device with no prob.
if you switch it ON yahoo will generate a ONE TIME PASSWORD for your device set up. (this adds additional security to your phone)
*I highly recommend you do the ON option
to set it ON:
-->> switch the ON for Two-step verification/
-->>have a nickname for your device ex "mike iphone5"
-->>click "generate password"
-->>a long password of random letters will pop (this password will be the password when you set up your email on your ios device)
*it is to be used one time only.
-->>go to your device set email as usual.. then for the password use the long password yahoo provided.
THAT'S IT! HOPE IT HELP!
!!!! DON'T FORGET TO CLICK THE START I THIS HELPED YOU TO HELP OTHER USERS TOO.