You are getting that error vexko because the date and time on your device is not set correctly. Set your device to the correct date and time and you will be able to log in.
Enzo007 wrote:
It sounds like your iPod is the problem since it is happening on multiple accounts. Have you synced your iPod to iTunes recently? I had a problem kind of like that and syncing my iPod to iTunes on my computer did the job.
I think when you sync your device it will set your device to the correct time and date.