The server could not be reached and your progress may not be saved

I got this message:
" The server could not be reached and your progress may not be saved. Please contactsupportif this message persists"

what happened?

It sounds like your browser was unable to connect with the freeCodeCamp server. There are a number of things that can cause this from your local internet connection to regular maintenance or update cycle to a significant infrastructure failure. There’s probably nothing wrong unless this problem persists over a significant period of time.

I am not currently seeing any issues with connecting to freeCodeCamp. Try refreshing your browser and signing in again if needed.