Can’t get notice to buy Premium feature of fail2ban plugin to stay dismissed

I thought that we are supposed to be able to dismiss a notice about buying premium or pro upgrades for plugins and have it never reappear. I have six websites that use the fail2ban plugin. The notice appears at the top of every wp-admin page and is very annoying.I’ve already rated it. I don’t need any of the special features in the premium version. I click the Dismiss link but the next time I log on, it is back. This happens on all my websites.

Hey! How do you like WP fail2ban so far? Test all our awesome premium features with a 7-day free trial. No credit card required!

I don’t need the features and don’t want to test it or buy it. How can this unwanted notice at the top of every single wp-admin page be made to stay dismissed?