After energy ran out unexpectedly, and selling half my drones, for some reason the matter stat completely froze. I couldn't buy anything or launch anything, and nothing was decreasing.
it might be either a crash or a hangup to the pause. If energy is not changing but button work it is probably because the game time has been paused and has to be resumed.
In the coming update I will make the resume button available and might solve these strange cases.