Firefox Browser won't open URLs or links etc
I've been running the Firefox browser for several years. No real problems with it. Any prior issues were minor and easy to deal with. Two months ago, I downloaded the Avast VPN application, which I was happy with. (hang with me here, please.) But, a week ago, I started seeing this internet connection message, "unidentified network internet access" along with my internet connection notation. When I turn off the VPN all is well for while. I can open Firefox, even get into my AOL mail. But beyond that when I try to clink on a link or bookmark or type in a URL on Firefox, it never opens. Just sits there. I have tried every suggestion on mozilla help pages and Avast (that I understand) and still no fix. Wit's end here.
I also have the Edge browser and this does not happen with Edge; all work. So I'm thinking the issue has to be with Firefox. I'm thinking I should just delete Firefox browser from laptop and then load it back on my laptop. I'm not a techie and am not comfortable with that. Any other suggestions would be greatly appreciated. I don't want to quit Firefox. Thanks.