Rose HiFi Streamers Account Recovery Problem

Howdy folks! I’ve heard about Rose streaming products, and how bold and sublime they are when it comes to sound quality. I recently purchased an RS-150b. The only problem is recovering your password and email address if lost or forgotten. They give you a temporary password to recover it, but that turns everything into a nightmare, because for some reason it still doesn’t allow you to recover and access your account. It then says your account doesn’t exist, or this email address is unknown. There’s no customer service phone support which even adds to the onslaught. If there’s anyone who’s experienced this problem before with a Rose account, please help me. I’d be very grateful.
Thanks👍