Problem with a lessons, all lessons are unsolved but I solved them

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A similar question was asked here. Perhaps it may help you:

My lesson progress is missing

There are two different types of saved progress for Free Code Camp: your profile and your browser cache. A list of your completed challenges is saved to your account in the FCC database. You can see the list of completed challenges by looking at your public portfolio. With a growing curriculum already over 1,400 lessons and a community of millions of people, FCC does not store every solution to every challenge in its database. When you complete a challenge, there is a modal that gives you the o…