Robles answering messages from people
Was the message(s) you received about not being able to complete a purchase? When you tried to reply, did you get a notification that it's not a valid account?
@ShielaByShiela: What problem are you having? Are you getting an error message? If so what is it? Are you experiencing this using an Etsy app (on which operating system) or via mobile browser or desktop browser (which browser and operating system)?
I would like to know how to contact someone for help
Help with what? You are being way too vague--no one can help you until we know the problem.
If it is financial no one here can help you. Otherwise we possibly can.
If you are trying to respond to a message and it says something like "not a valid user", that's because etsy has already identified it as a SCAM and deleted the account. They are protecting you.