I don't know how I missed this but you were not able to go through that part, I know exactly where you got stuck at, I'm really sorry, the hard mode was literally impossible. However, I just fixed it so you should be able to go above a certain hole and reach the other chain.
3 years ago(+2)
So Yea I reached the first "chain" as you call it but I do not seem to be able to go much further
3 years ago(+3)
I'm sorry, I can't believe how massively stupid I am, I fixed the other side but forgot about that one, I'm fixing it right now.