(I am not a security expert, nor do i claim to be. If i’m wrong about something, don’t bite my head off about it. Shit happens.)
Genuinely, this seems like a huge security risk. No matter what your true intentions are, having someone else make the account for you should never even get considered, let alone actually putting it into use. From what I know of radmin, you’d basically just be giving people that you don’t truly know direct access to your home network. This is not only a risk to your machine/server, but it’s also a risk to others on your network, such as your family. This is me assuming you’re using your home/main internet network for this.
Do you even fully understand the backend? If not, that’s also a security flaw. You could leave a massive backdoor as a result of something being configured incorrectly, even if the option makes miniscule changes. If you keep on in this manner, the chances of this becoming a Phoenix sequel are high. All it takes is one person.