So aura and acrylic is tricky, and it comes down to two major aspects: The aura’s best at cutting thinner materials, and it’s best at darker solid colors. It’s a diode laser, and the blue laser light will pass right through clear acrylics, and bounce right off things that are too light (like white or some of the pastels). it just can’t work with those types.
So, if I were you and wanted to look for acrylics that will work best with the Aura, I’d google “diode laser acrylic color” to get a sense of which colors work, and then I’d go looking for 1/16" thick acrylics to try.
There’s a great list of acrylic suppliers in this post, check out #1a:
PS: welcome to the forum, we love new users here. 