Warum indiziert Google Discourse nicht? SEO-Bedenken

[mstm]

Dieses Google-Verhalten begann vor Monaten und wird leider immer schlimmer.

Sudden drop in traffic

The decline continues in my two discourse sites, all previously indexed pages are becoming “Crawled - currently not indexed” and disappearing from Google search. [google] I can understand on one site but is it possible that it happens with in two completely different forums?

Die Sitemap hat in meinem Fall nicht geholfen …