Jayce not being able to use summoner's after first use on PBE

I was playing Jayce on PBE. I couldn't use Flash or Teleport after the first time I used them. It was dark (like an ability that you have not learned yet) and when I pinged it, it said ready but When i pressed it, it said that the ability was not ready to be able to be used. The runes I was running was Phase Rush, the Ultimate hat, absolute focus, gathering storm, triumph and coup de grace. I was going against an akali and bought a serrated dirk after my dorans blade, hp pot, and trinket.

Not sure what caused this.