I don't know why they delayed the ico though
I think the main reason is the cold ico market recently, maybe some negative effect from the btc swegit or two many hot ICO projects get down to lower then the ICO price, which makes the ICO participants losing the faith.
Exactly. We did not want to make people uncomfortable with money they were spending after their disposable income effectively halved in a week. Also, if you look at recent hot token sale performances (e.g. District0x), you will see that this is just not the best market condition for a successful token sale. We did not want to risk being in a similar position.