Thanks Lise. These photos are much better. I can tell you without any doubt at all now that this plant is in fact the 'Royalty' clone.
You are growing it too warm and not bright enough indoors, under lights. Every new growth should have at least one spike. My mother plant of this clone, which gets lots of bright light (about 60% shade), often makes two stems per growth.
Can you put it outside next summer? A place where it gets dappled sun and enough air movement to prevent overheating would be ideal. The cool temperatures overnight will bring up the colour intensity. Also, the form and the size will improve sharply.