Firefox install

I had to uninstall Firefox because something was blocking it-wanted me to call…scam?
I updated/improved my AVG subscription.  Now AVG will not allow mwe to reinstall Firefox.  Why?

Hello Lorene,

We are sorry for the inconvenience caused.
We request you to disable AVG protection program temporarily by following the instructions as mentioned in this link: http://avgread.me/1GnMD3N and check whether you able to install Firefox browser.
Please make sure that you install the Firefox file downloaded from the trusted or official website.