Following the announcement of Google+ API deprecation scheduled for March 2019, a number of changes will be made to Blogger’s Google+ integration on 4 February 2019.

Google+ widgets: Support for the “+1 Button”, “Google+ Followers” and “Google+ Badge” widgets in Layout will no longer be available. All instances of these widgets will be removed from all blogs. 



+1 buttons: The +1/G+ buttons and Google+ share links below blog posts and in the navigation bar will be removed.