For changing to ssl,
ehcp gui->options->fix apache config with ssl

after changing to ssl, wait 30sec, go to ehcp gui->options->advanced and check if apache ssl is active ?
if there is an error, it fallbacks to non-ssl mode.

to check for errors, check /var/log/ehcp.log.

you may also send last 5000 lines of ehcp.log to me for checking.