you just have to wait now.. it looks like you have some die off on the live rock tho.. those black spots.. you could take it out and brush off whatever looks black.. the die off is causing your tests to go through the roof. but otherwise.. you just have to wait.. you know its going to go through a cycle.. high ammonia.. then low then goes high nitrites then it fails the the nitrates kick in and you have to do a water change.. so basically now its just waiting.. waiting... o and some more waiting.. til the cycle goes through and all the tests look good
Just wait... Once the ammonia and nitrites test at zero, start adding some cleanup crew to deal with the algae. Water change really isn't going to do much. You could remove the rock and brush off the dark spots where decay is happening.
Mostly, you just need to let the bacteria colonize which takes time.