That's the problem. They don't explain how it works. So it is extremely difficult to judge whether it works, or works well enough to trust one's data to. Or is it any better than just ordinary RAID5/6 ?

Blind, vague claims about "file level" not "block level" are unhelpful. Digging deep into their wiki the disclaimers do start to appear, though, which is worrysome.

I personally wouldn't trust that software, at least not without information about exactly how they propose to protect my data.

Cheers