Is Sterling Associates legit?

Could you please provide some insights on the legitimacy of Sterling Associates in the cryptocurrency and finance space? I've been hearing a lot about them but I'm not sure if they're trustworthy. Are they a registered and licensed entity? Do they have a solid track record and a good reputation among their clients and peers? It would be great if you could also share any red flags or potential concerns that I should be aware of before considering working with them.