It started out really strong! We went into it expecting some changes, and even some rearrangement. Only natural. We didn't want a frame by frame recreation because that wouldn't work.
Last couple episodes things fell apart. Lore was wantonly changed or forgotten. Key moments of growth and development for almost every single main character are entirely gone. They tried to replace these with others which in almost every case fell flat. To mention two Katara is overpowred without getting even half the training she would need. Sokka's Warrior journey is ignored in great part as well. Maybe they will correct that part later. The moon spirit situation was... so bad.
I mean seriously, they blatantly ignored key elements of the source material. If you look at it as a stand alone thing then maybe, maybe, maybe it would work. With reference to the source material not a chance... sad writing. Another example of a live action remake changing things up too much.