After installing the paid version of Avast antivirus and clean

After installing Avast antivirus and clean several things on my computer have changed or don’t work. My default search engine changed to Bing. And I had been able to cast videos to my Roku, but now I can’t get my computer to even talk to the Roku. I’m trying a restore to a previous point. Hopefully that will fix it. After spending over $100 I didn’t expect this.

Hi,

Please create a support ticket so that we can investigate the issues you are referring to.
https://support.avast.com/en-ww/contact/

Is the firewall module in Avast set to “private”?