I have some unique cases,
First
I used android phone and twitter for android, and I used my phone as login confirmation (twitter login verification feature). One day my phone had a problem which require me to roll back my phone to backup point that already made with CWM (ClockWorkMod) before I used my phone as login confirmation on twitter. After restore process done, I open my twitter for android and go to Setting->My Account name->Security, Here is my problem, every time I click on Security it always said “Login verification is enabled on another device for this account and bla bla bla”
Second
My first problem was drag me to the second problem. I tried to login on twitter through my computer, GREAT, he said “We’ve sent a login verification request to your phone” but my phone never received that confirmation anymore. And then I use my backup code I’ve previously generated to login and there it is my second problem showed up, finally back up code was stop working out after a few time I use it to login.
Third
Before the back up code stop worked I’ve tried to disable login verification under Setting I choose “Don’t verify login requests” but every time I click on Save the option goes back to “Send login verification requests to my phone” which is never received any request anymore.
Fourth
Before any of this I’ve tried to add my phone number to my account under Setting->Mobile, I’m from Indonesia, then I click on “Activate phone” but then the page doesn’t changes and stuck on page “Text GO to 89887” also I never received message from twitter.
That’s all my problems, I hope I can make twitter more better 
