Help wtf is going on with these plants?

My two sativa plants were growing great minus some leaf hoppers so I used schultz insecticidal soap and now my leafs are burnt/turning black and my buds are browning. Is this the soaps fault or do I have a nutrition problem? Second year growing so fairly new to all of this. Wondering if I can revive these sweet hunnies? Been using tiger bloom/fresh water/ just switched over to big bud.

Kinda looks like bud rot...Spraying flowering plants was a bad idea if u ask me but if it was a must then u just have to do it and pray