Problem installing Bitdefender total Security on my second mac

Hi I have bought the product Bitdefender total security , but i'm not able to install the product on my second mac.

I have also an iPhone, and here the installation went ok. So it is running ok on my mac 1 and on my iphone.

I have send the link to my mac 2, and downloaded and installed the product, but in it says

'At Risk' Your device isn't fully protected, but I have installed the product, and uninstalled the product some times, but it doesn't help - can anyone help me ?