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AT&T Extension 1.1 is blocked can't enable it why?

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Firefox is blocking an addon called AT&T Extension 1.1. Why is AT&T being blocked, they are a viable company. I need to unblock this and see if it will correct my problem. I cannot use att troubleshoot and resolve because it won't download.

Firefox is blocking an addon called AT&T Extension 1.1. Why is AT&T being blocked, they are a viable company. I need to unblock this and see if it will correct my problem. I cannot use att troubleshoot and resolve because it won't download.

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Separate Issue; Your System Details shows;

Installed Plug-ins

Shockwave Flash 23.0 r0 Shockwave Flash 18.0 r0
Having more than one version of a program may cause issues. You must remove the older programs. Then get the current full installer.

Flash: Grab the uninstaller from here: Uninstall Flash Player | Windows Uninstall Flash Player | Mac

Then reinstall the latest version.

Note: Windows users should download the active_x for Internet Explorer. and the plugin for Plugin-based browsers (like Firefox).

Note: Windows 8 and Windows 10 have built-in flash players and Adobe will cause a conflict. Install the plugin only. Not the active_x.

Flash Player Version: 23.0.0. 207 Flash Player (Linux) Version 11.2. 202.644

https://get.adobe.com/flashplayer/ Direct link scans current system and browser Note: Other software is offered in the download. <Windows Only>

https://get.adobe.com/flashplayer/otherversions/ Step 1: Select Operating System Step 2: Select A Version (Firefox, Win IE . . . .) Note: Other software is offered in the download. <Windows Only>


See if there are updates for your graphics drivers https://support.mozilla.org/kb/upgrade-graphics-drivers-use-hardware-acceleration

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Have you contacted its support site?

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In the Addons Manager > Extensions - is there any mention of "AT&T Extension 1.1 could not be verified for use in Firefox." ?