check out the email address. (@.......com). I got one from Ringdom that is an allied company with Dreame, although Dreame is more towards the female side. And I talked with them, and I got an exclusive contract. Although I chose the non-exclusive one and yeah, it's legit.
Proof?
See here: (I wasn't able to get the complete picture in one shot and also since I have my details filled)
Also, I haven't signed since I will sign it once I complete my novel and then directly publish it there without any wait.
So some are scam, some are not. Check their email address which will give you a basic idea. I had
@ringdomstory.com , maybe you will have something like
@dreame....com. So chat with them and check it for yourself