Don't take this information as gospel.

I've seen similar spotting damage from a very small, thin white moth. I couldn't tell you what it was but the little critter could move fast. I spotted it and squished it. Never had those spots again.

Not sure on the curling, dried tip issue. I would think maybe heat, damaged leaf veins or root damage could be to blame. Doesn't look like its happening to the whole plant anyway.