Why does my Snapchat not let me log in?
Why does my Snapchat say connection error when I try to login?
Why is Snapchat temporarily failing?
Make sure you’re using the official Snapchat app from the Google Play Store on your Android device. Check that your system clock and date is in order. Confirm that you have a valid Google Account on your Android device.
Did Snapchat delete my account?
Can Snapchat delete your account?
Why can’t I log into my Snapchat iPhone?
Sometimes you need to start from the beginning (a very good place to start!) and uninstall Snapchat. Once you’ve deleted Snapchat off of your iPhone, restart your iPhone. Then reinstall Snapchat the way you normally would through the App Store and try logging in again.