Bubblelicious Autoflower Plant won't grow

I am concerned that my plant isn't growing any. Its 2 weeks old and hasn't grown an inch in the past week. Any ideas why this could happen?View attachment 2403057View attachment 2403058View attachment 2403059View attachment 2403060View attachment 2403061View attachment 2403062



EDIT: FYI thats a mini bic lighter

Here is a picture of it when its a few days old. I recently took it out of the hydroton and buried the stem about 3 inches.