Both plants have been about 10" under a shop light containing four white LED grow lights (each 18W at 5000K) (each equivalent to 32 W fluorescent bulbs) from superbrightleds.com (link below). Also, the shop light is directly in front of a big sunny window so they are getting a bit more light on top of that (timer on 12 hours per day). So I'm not sure if light is the issue, my only other option would be to put them outside, but fall is starting here. Right now I'm wondering if I've been scammed as it doesn't appear possible to grow leaves from stems with a single node but no leaves. I just wanted to find out from experienced growers if this is actually possible as I don't have a greenhouse.
Regarding why I purchased them from this vendor, it was a spur of the moment purchase. The thing that caught my eye was that it said that it was a special high yielding variety, the plants looked unusually succulent in the pictures, and that they were offering two cuttings. It did have phyto certificate as I recall. Unfortunately I didn't look up the location of the vendor at the time of purchase. It was only after being surprised at what I was sent that I saw where they were from.
18W T8 LED Tube - 2,070 Lumens - 4ft - Single End Ballast Bypass Type B - 32W Equivalent - 5000K/4000K | Super Bright LEDs