Hi,
You appear to have made some coding changes to the plugin including removing the version number e.g. <!-- SpeakOut! Email Petitions 1.16.4 -->
so I suspect that something you have done has affected this.
If you have modified the code, the only thing I can recommend is reinstalling the plugin and if you must hide some elements either do it via CSS or after each change check your petition to see if that was what has caused the issue.