Purple, black, and raised spots. Should I be worried?

[bellatulum]

Hi, I bought this Lc. Trick or Treat in March from someone who was selling off their collection. I got it cheap because it wasn't in the greatest shape and I was hoping to bring it back to life. Long story short, it finally started a new growth in August but the growth has since stopped, maybe it's just taking a break?

Anyway, I wanted some opinions if the orchid is actually sick or not since I'm not entirely sure. It has some black spots on the older pseudobulb but it's still firm. There's purpling on the new leaf but I don't know if it's because it's just growing under lights. Also, there are some raised areas (on the new leaf I've highlighted it in red).

I would really appreciate if anyone can give some insight if this is anything to be worried about. I didn't worry at first because it was growing ok, but now that it's halted I'm not so sure.

Thanks!