I've been using Message+ on my Windows 8 PC for years. It suddenly stopped working. I tried to repair and got a verification code on my phone. When I entered it, I got invalid pin. Tried several more times. I then uninstalled the app on my computer and searched for it, thinking there might be a later version all of a sudden for Windows 8. Reinstalled it and have the same exact issue. I get the verification code on my phone with no problem, but get the same message of invalid pin every time I enter it on the computer. I'm on my computer for hours every day and used this app throughout. How can I get it back?