I need to cancel a "non-approval" of an extension

Accidentally, I said 'No' to a request to install an extension of my anti-virus (Avast free). I need to install the add-on. I tried the UN - and re - installing Avast several times, but I can't the coming add-on. I even "upgraded" Firefox (that is, downloaded and installed the latest version without messing with my profile folder), but to no avail. I suspect that the answer lies in my profile folder, but I don't know where to look in there. Any help with this would be deeply appreciated.

Thanks (in advance) for your help.

Hello

You can download and install a new copy of the plugin here:
https://addons.Mozilla.org/en-us/Firefox/addon/avast-online-security/

Tags: Firefox

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