(Please start new threads for new issues — the thread you posted to was specific to one person who didn't understand how to use the plugin. I've moved this to a new thread.)

See this section:

https://www.zotero.org/support/word_processor_plugin_troubleshooting#communication_error_or_non-responsive_plugin_buttons

If you're still having trouble, we'd want a Report ID to start, as well as a list of everything you tried, in your own words.