I have read that the ETF was postponed, is it true?If yes, when it was postponed?
It was postponed several times before being rejected.
There are plenty of desperate attempts by various groups to get a Bitcoin ETF approved, but it's not going to happen. The American government is definitely opposed to it, because of their beliefs about fraud being committed with Bitcoin and their thoughts that it should be treated like a penny stock (they don't see any intrinsic value).
The SEC will naturally be conservative about ETFs for very different technology like Bitcoin.