Trying to breed superworms

I separated my supers and they pupated, I put them in wheat bran when they turned to beetles. I have baby worms but they are just like meal worms. They are not growing big and are pupating and look just like meal worms! wtf??

If that is happening then what you may likely have is giant mealworms and not true morioworms. Other thing is you may not be providing the habitat they need to grow properly but the pupating with out being put into an individual cell and stopped feeding it is not how morioworms work. Can you post a pic of your feeders and we can try to identify what you got goin on there?