When I clik on the extra protection tab it pulls down revealing Webrep when I click on the Webrep icon it shows the current browsers that are installed on my computer also it says uninstall WebRep next to Firefox and Internet Explorer.
Please try this,
Avast UI --> Additional Protection --> Webrep --> Uninstall the webrep by clicking the uninstall link next to Firefox.
Then restart your computer.
After that try to reinstall it in the same way.
Avast UI --> Additional Protection --> Webrep --> install the webrep by clicking the install link next to Firefox.
Again restart the computer and Check it.
Thanks
Same to you