Recently my smartphone Samsung Galaxy S4 mini loaded and installed an OS update (of course, after I confirmed this). It went from Android 4.2 to Android 4.4.2. I did not change anything in the Due Today app.
I need to mention that I synchronize Due Today with my ToodleDo account.
But since that update, from time to time I get a synchronization error message popping up saying:
Invaild username or password step
Connecting to sync server
But the strange thing is that, firstly, my login data are correct and, secondly, when I open the app and sync manually I can synchronize with ToodleDo just fine. No error message and synchronization works.
What could this be due to? How can I fix it?