I have my own DO account and I also manage accounts for clients.
When you sign into your account there is no indication in the top header who you are or what account you are in.
This was further complicated by the fact that I have a habit of naming my droplets the same thing.
For example, I will often have "web-server", "git-server" and "build-server" for most client setups. So you can imaging the confusion when you log in about which account you are working on.
The only way to tell is to click the cog button and see the email address in the menu.
Please move this email address so that it is always displayed in the header.