<button="Five Nights at Freddy's ReDreamed">|Active Dev|

For some reason the power starts at 0% when i attempted 4/20 mode.

I personally think that there isnt a extras thing. When i beat night 6, the screen goes black and thats it.

If you have completed Night 5,6, or 7 before {Ver 1.04.26}, Night 6 and possibly Extra will disappear.
It will fix itself after you beat Night 5 again.
Apologies for the inconvenience.