Solutions

So if you are playing Plasma Clicker and are wondering why there is a missing button and when the prestige button won't let you prestige even though it says +1 dark matter you've come to the right place.

The singularity(sorry spoilers) is the second prestige layer and only unlocks once you have 1000 dark matter stored up. And to prestige you have to  have 1000 plasma due to how numbers are rounded up it may say +1 when you have 600 plasma but you actually have .6 

Thanks for playing

word of advice in order to not lose your progress every update make sure to export your game string before changing versions and then import it into the new version