That is usually because you are retrieving your emails via Outlook or Hotmail. 

Both systems use the system, which can lead to an account conflict if you try to verify another account from these programs. 

1. Please copy the verification link into the clipboard

2. Log yourself out of your Hotmail account or close your Outlook

3. Now open your browser and insert the previously copied link into the address line

4. Confirm by pressing Enter

The verification ought to work now.