We're sorry for the discomfort this has caused you.
Let us temporarily disable your AVG programs (AVG Internet Security, AVG Secure VPN & AVG AntiTrack) one by one & check which program is causing these issues.
Refer to this article to temporarily disable your AVG Internet Security.
To disable your AVG Secure VPN, turn of the slider button in the main window of AVG Secure VPN.
Coming to your AVG AntiTrack, please disable the "Anti-Tracking" component in your AVG AntiTrack.
Keep us updated.