Hi Jitspoe! Thank you for playing! Sadly we did find a bug where the end-turn-button doesn't properly re-enable when a new battle starts (I fixed it but was just SECONDS too late to upload the new build). A potential work-around is to play the first turn of a new battle making sure you're fully out of energy, and it'll autoskip to the enemy turn, sorry for the inconvenience!
After the rating period (when the game unlocks) I'll be sure to upload the fix!