Button for Gmail Notifier addon has disappeared, even when reinstalled
Suddenly, the Gmail Notifier is gone. It is still in my list of addons but I can't see it. I have uninstalled and reinstalled it twice, but the notifier button doesn't appear, and it isn't in the list of features in the Customize menu either.
Thank you, installing the latest Firefox version was enough to solve the problem
Glad to help. Safe Surfing.