I'm guessing you're referring to their densities?
Not balancing the right levels of 'light' (from Red>orange>yellow) and not doing things that encourage 'love' (Service to Self or Service to Other-Selves*), the green light/energy, will result in them not being able to move up the densities to 4densities.
*Other-Selves refers to a one being that experiences existence through multiple entities, each one of us being part of the One creator complex that has given birth to life on multiple levels and densities to experience new aspects. Other-Selves are thus referring to vessels other than the one 'you' are currently inhabiting.