I happened on your extension and fills a vital gap in the Joomla core for GDPR purposes here in Europe.
Unfortunately, I have had an issue with the language overrides and get the message in the inspector:-
"ReferenceError: Joomla is not defined - line 7"
The offending line is:
I also notice that when the plugin is installed, Joomla doesn't read the Language override file, eventhough I checked and it's where it should be.
Installation of the plugin was successful.
Sorry for delay in reply.