I switch from http
to https
two months ago, and now lost all my 'Likes'.
Even when I use facebook debug tool it now has the same count between the http://
and https://
Anyone knows whether it is a facebook bug? or is there a workaround solution to retrieve my old 'Like' count?
Typically Facebook likes are linked to a URL. Even a single character change will lose Facebook likes.
Here is a link on Facebook
https://developers.facebook.com/docs/plugins/faqs#moving-urls
Go to the bottom of the page and find this section How do I move a page to a different URL? - can I migrate the number of likes to the new page location?
<meta property="og:url" content="https://example.com/old-url" />
You will need to instruct the facebook crawler to re-scrape your url for the changes to take effect:
https://developers.facebook.com/tools/debug/sharing
That should be a solution to your problem.