Keep getting invalid code I use this for work and it always takes multiple times to log in and last night it took me about 20 minutes to log on  and I work for a time sensitive company. I had late cases and a mess when I finally got back on! I had reinstalled the app  and unverified and reverified my phone and still took forever to verify the phone it kept saying invalid code. I've found if I enter the code right before it expires or a second after it works but I don't understand why  and of course  I'm the only one it happen to.