I've implemented the settings described in https://support.xmatters.com/hc/en-us/articles/202021155-How-do-I-add-support-for-characters-other-than-English-
However, non-english characters are translated into '?' characters in both the web interface and via AddEvent web service calls. I can paste, for example, simplified Chinese into the quick message panel or into a web service call and it will display correctly -- however once I submit, the system displays and sends notifications with '?' replacing the characters.
Are there additional configuration changes needed?