Here's a link to the recommended ammo.
Try the stuff you have, it may well work. The one that works best in my kits is Remington Golden Bullets. I seldom have failures with that round even though most folks hate it.
I've had three AA kits for a while now, got my first in 2010 and have many K rounds thru all of them.
I usually shoot any where from 50 to 100 rounds per session. Helps with grip, trigger control and aim. Then I finish with 30 to 50 rounds of regular range ammo. In my case 9mm. Also throw in some carry ammo.
Good luck with the ammo. The kits are a good investment.
Edit: Welcome to the Forum!