I have to ask if you have actually done any L&P courses with CND as the brush provided with the Course kit, and used during training, is a ProStyler.
The brush you are using is very small....and the only time I ever used a honey tip brush was to do detailed work with coloured acylics.
I have to ask this because your profile does not say what training you have had, or what level of experience you have. That would help us in answering you without having to ask too many questions.
I think you should switch to a Prostyler, and get some 1-2-1 with an Educator, as you might need help getting the correct the mix ratio using a larger brush ( it is a size 8).
Regarding the clogging up of your brush with setting product, this as everyone else has said is a mix ratio problem, and also not wiping your brush effectively. You will require to clean your brush in your monomer.
Again, all of this information is in your CND Foundation course manual, and would have been well covered during training.