Actually it’s the other way around - the ASUS Xtion Pro Live came first. Unfortunately, it’s not available on the market any more. The Orbbec Astras are (slightly crappier) clones of the Xtion Pro Live, and especially from the software side they are basically 100% replacable.
Are you talking about the Orbbec “3d club” forum? Yes, you’re absolutely right. The support by Orbbec is basically non-existent, and they don’t reply to bug reports. It’s just some poor customers trying to help each other figuring out how to work around all the Astra firmware bugs. Unfortunately, the Astra is still the closest thing you can buy today to the original Xtions.