The stage S9 isn't available the first run. It shows up the second run, and the game gets harder with each run. One of the power ups is supposed to restore the ultimate which won't do anything if you are off cool down. If you can describe the icon of what isn't working I will investigate. Any and all feedback is welcome. I will work on the enemy attacks to make it bit more challenging with the next update. If you have any requests let me know. I will try to work them in.