Black spots on Zygo leaves and yellowing on a NOID

[hayesraceing28]

I did surgery and removed the infeceted part of the leaves. I used a new and sterilized blade for each cut. I then did use cinnamon on the cut areas. I also sprinkled cinn. all over the plant. I don't know if that will help or not but that is what I did. I have also uped the humidity level and air flow. I think I should probably up the light level also. Hopefully, the plant will recover. Thank you for the reply.