Web Notifier is a notification extension for chrome. it's a free extension , it has 131 active users since released its first version, it earns an average rating of 4.50 from 2 rated user, last update is 3503 days ago.
You could download the latest version crx file or older version files and install it.
You could find more help information from web notifier support page.
You could send emails to publisher, or check publisher's website.
More about manifest_file of web notifier.
You could click to report abuse of web notifier.