Not sure what happened there. Here’s a search for Proviron that turns up results from various topics:
https://forum.propeciahelp.com/search?context=topic&context_id=42363&q=proviron&skip_context=true
And a search for mesterolone, the generic name of Proviron:
https://forum.propeciahelp.com/search?context=topic&context_id=42363&q=mesterolone&skip_context=true