'wss://public-api.wordpress.com/pinghub/wpcom/me/newest-note-data' failed

[vporton]

While using AddThis plugin from a WordPress.org installation:

Could not retrieve settings from WordPress. Your WordPress session may have expired. Try refreshing the page. If that doesn't work, you may need to update this plugin.

and in the JS console:

WebSocket connection to 'wss://public-api.wordpress.com/pinghub/wpcom/me/newest-note-data' failed: Error during WebSocket handshake: Unexpected response code: 403

[github-actions]

This issue is stale because it has been 180 days with no activity. You can keep the issue open by adding a comment. If you do, please provide additional context and explain why you’d like it to remain open. You can also close the issue yourself — if you do, please add a brief explanation and apply one of relevant issue close labels.