So mad

Wanted to try new grand arena. Did setup phase by putting in defence. Went to bed. Woke up 7 hours later and there are rewards for being 1st in my inbox. Ok, cool rewards, but I wanted to play....to attack. There was no attack phase. Is attack phase 2 min in the middle of the night. 24hr to set defence and no attack.......I'm very upset.
... disappointed.