Can you do the following:
Log in with your account to Miradore Online: https://online.miradore.com/
Then open the Miradore Online site and click "Contact us" on the upper right corner on the page. There is a text box, where you can write this account removal request.
Posting your request through the "Contact us" form ensures two things:
- the request is authorized (as you need to login with validated account credentials first)
- our support gets the request linked to the sites so they can also remove the linked sites from the service