Aaaaah yeah then I really know what you're going through. My parents had one for many years, and over time the attachment would stay on less and less. Eventually the hose at the machine end broke entirely. I remember more than once, when I was setting it up, I'd have the hose fly off and spray everything partway through a wash because I was a milimeter off in getting it on. It is not easy. Would make more sense if there was a sealing sleeve that fits over the hose and the faucet that locks on and over everything, preventing any mishaps and mistakes.
But yeah, feel you pain.
But yeah, feel you pain.