Hello,
i have been struggling for the past 2 days to connect to the Avast SecureLine. Originally it was giving me the “Oops technical error”. The following the directions on the forum I installed the Standalone Beta version, and even though i restarted the PC multiple times, it still gives me the error that it cannot browse the internet (even though if I open the browser can). I tried to fickle with the firewall setting, but to no avail.
If you reinstalled, installed the Beta version and did the every common steps to fix it, and nothing works… i suggest you to contact support: https://support.avast.com/en-ww/contact/
If you do, please, do not open more than ONE support ticket. They can take between 3 or 5 to answer it.