Can Not Save The Progress(((

I can see that presently you have completed Day 6 of the first episode. So, do you still need any further assistance?

Please try to sign-out and sign-in:

1. open https://peacerevolution.net/ in a separate tab.
2. press Sign-out
3. press Sign-in, fill the email and password fields
4. press Sign-in
5. try to submit your answers on the previous tab

Does it help?