Help with my progress

Why my progress in the forum was restarted?

It wasn’t.

Yes, it is. I almost finish the Reponsive Web Design certification and now appear as I never do it before.

I thought you were asking about your forum account. If your FCC public profile does not show any of the work you have done, then you have accidentally created a new account when you signed in. Account data is only deleted when you explicitly request resetting it and there are a couple warnings to prevent this. The only other reason an account would be gone is if you were a beta tester and your account was on beta. Accounts are identified by email address, so try logging in to Free Code Camp with any other email address you may have.