I completed some exercises in Parts 1–3. However, when I started Part 4 using Visual Studio Code, my exercise data and progress from Parts 1–3 were not synchronized. As a result, I had to complete all the exercises again.
After completing some exercises in Part 4, I later checked the web version and found that my progress was showing there correctly.

I completed some exercises in Parts 1–3. However, when I started Part 4 using Visual Studio Code, my exercise data and progress from Parts 1–3 were not synchronized. As a result, I had to complete all the exercises again.
After completing some exercises in Part 4, I later checked the web version and found that my progress was showing there correctly.