Finally, after a very long time, I recently upgraded to version 1.77b. Instantly, it solved all the bounce.cgi and signup.cgi bugs that I could not solve in the past. Many thanks to Dean. Now with a server that allows SSH server access, wget installed, the scripts seem to work flawlessly ... except one remaining minor problem.
The "remote test address" is not receiving the TEST message indicating that all scripts are working. The admin address does receive the test message.