Had you mentioned it was small when you got it, I might have withheld my “something’s wrong” comment. If you can grow and bloom other plants under your overall regimen, this should be no exception.

Sometimes immature plants, if potted individually, can be very slow to grow at first. I acquired a single-growth Paph. stonei from a grower who gave up on it after 4 years. I had it for two more before it bloomed. Now it has two growths - still slow growers, but faster than before (although I’m sure KelpMax has helped).