After review of BBSFiles on the wayback machine, i see the following:
https://web.archive.org/web/20190712050225/http://bbsfiles.com/ftp/TopSoft/

I spoke with Steve Richardson on 05/04/20 about these doors.
He said he nor his brother has the source or keygen software.
I have a registration file for all of these doors for: GameMaster's Realm
Steve has given me permission to release my key files to those that ask
Please send an email to: support@BBSFiles.com to request a key.

Does anyone have the keyfile they can share for TopSoft games? Looking to get
BBS Crash reg'ed and perhaps some others from Topsoft.

Thanks!
--- SBBSecho 3.14-Win32