I have not done the paid Lumosity exercises but when I tried the free samples of Lumosity and others, I found there is a learning curve. The computer skills needed to do the exercises can take a few repetitions. I've been doing the free versions of the Rosetta Stone Fit Brains program. It took me quite a few repetitions to get good at the computer skills. The Fit Brains program appears to be set up for a desktop computer using a mouse, not a touchpad found on a laptop.

You also may have inputted some erroneous demographic data so your performance is not being properly scored.

Either way, don't be discouraged.