First of all, I watched it without knowing that this was a re-do version of another story. If you haven't watched the other version, then, just watch this and don't read other negative comments!
That being said: I just loved it.
It was perfect.
It kept hanging over and over again.
I cried several times which I barely do (compared to my friends).
I loved the way the series managed the time travel, it gave me DARK vibes (german series from Netflix as well). I understand that some people might think it was confusing, but to be honest it was pretty simple to understand if you're paying attention.
The cast was perfect as well.
The music was perfect.
Just watch it.