When you get a bit click happy and close out screen before energy token applies the energy tokens disappear from supply but energy not applied. Lost 450 energy just now.
It sometimes takes a little bit of time for it to show up. I sometimes speed it up by adding another 10 energy token, or force close the game and re-open it if I don't feel like spending another 10 energy. I think it's lag that does that.
I sent in a ticket about this issue 6 DAYS AGO and have yet to hear back. Extremely disappointed because I pay money on this game and devs could at least message me back. I have had them disappear and not be applied at all.