Incompetent… Who could guess?
Those unprofessional and incompetent people allow anyone to register using any email address. They do send a verification email, thankfully, but they still let the original id*ot use your email address to create an account. I've had to delete an account three times. Three times they allowed someone else to register with my email. Three times I had to remove accounts that should never have been created if the company had followed basic modern practices for account registration on the Internet.