I would agree with Angie that Creative products are great, however all products do need to be applied correctly for them to do their job......are you building the structure of your nails correctly, is the Apex in the correct place, are the nails you are doing a reasonable length, are they a good thickness, is zone 3 flush???
There are so many reasons why the product you are using may not be performing in the way that you would hope for, obviously I don't know which system you are using it doesn't say in your profile, so perhaps you are using a brand that is from the lower end of the market, however lots of people do struggle with the nails they are producing at the beginning of their career and it can often be down to user error rather than a fault with the product.
A 1-2-1 with your trainer may be something to think about, they may be able to help iron out any problems you are having.