For the last ten years a website displayed correctly in Google as www.mysite.com
(Note: example domain name only, to protect client's privacy).
Then a few days ago the domain appeared in Google as:
The "feedity" domain is obviously a Clickbank affiliate link. And the affiliate link still redirects to www.mysite.com
1) How can Google erroneously list an affiliate link in place of an long-established domain name?
2) How can we fix this problem?
All advice welcome, thank you.