I would suggest that you try and invoke the element fire, because the element fire is connected to the kunda force.
Invoking fire and pushing that energy and power into the base of the spine to feed your kunda serpent, I believe would benefit you greatly.
Many people begin to have problems with storing or even using energy that’s because your subtle bodies go into what I call shutdown mode, to prepare yourself to rise your kundalini.
I would suggest while trying for a few days, constantly invoking the fire element and rising your kundalini to make way, for energy to enter your energetic tubes of the energy body.
I would also suggest using a method which I made a while back, which is a elemental bath ritual, it will relax your physical body and will empower and exercise your spiritual vitality.