GPG error on fresh install

Hi, please somebody it can help, on fresh install I receive the next error.

W: GPG error: http://cloudmin.virtualmin.com/kvm/debian binary/ Release: The following signatures were invalid: 1719003ACE3E5A41E2DE70DFD97A3AE911F63C51
W: The repository ‘http://cloudmin.virtualmin.com/kvm/debian binary/ Release’ is not signed.
N: Data from such a repository can’t be authenticated and is therefore potentially dangerous to use.
N: See apt-secure(8) manpage for repository creation and user configuration details.

Looking at the install script, I have downloaded and readded the keys to apt, but I continue to get the same error. Did I somehow get the wrong key for the cloudmin?

Thanks in advance,