Thank you all for the replies and explanations. Indeed, freecodecamp seem to be actively maintained.
Actually, my issues were related to tests. I was having difficulty passing tests because there was no constructive feedback when the tests failed. So, I was clueless on what’s wrong and where I need to work to make the test pass.
Because of your help, I was able to find out the freecodecamp repo and looked at the tests to see where my issues were.
e.g: In one of Exercise Tracker project test, it was expecting date in specific format, which was not mentioned when test failed. Infact, it only metioned that the particular route test failed. So, its really hard to debug these situations without proper instructions and feedback.
Anyway, I am at the last module, and will try to finish it in a week or two. Then I will also actively contribute in developing the new curriculum as much as I can.