If you are using an adblocker or if you deactivated Cookies, the Feedback Messenger might not appear. 

To check if your messenger is blocked:

1. In your Interface, open the Firefox menu by clicking the preferences to the right of the search box.

2. Select Developer to open the Web developer tools menu. 

3. Select the Web console option. A console tab will appear either on the right or at the bottom of your screen.

4. In the console tab, search for a line that the widget for intercom (https://widget.intercom.io/widget) is blocked. If this line is listed your tracking protection is enabled and your Messenger button will disappear.

To disable tracking protection

1. Click the verify confirmation icon to the left of the address bar.
2. Select Disable protection for this session.

3. Refresh your page. The Messenger button will appear and the error will no longer be visible. Your protection icon will change to reflect that tracking protection is no longer active.