This was already requested from you in previous posts, but since you had re-installed several times…

Avast main GUI → settings → updates → “direct connection (no proxy)”.

Avast main GUI → settings → troubleshooting “load avast service only after other system services”.

Avast main GUI → web shield → EXPERT settings → “…well known browsers only”.

Then please reboot so the all the new settings will take effect.

Are you able to use web browsers (if one is not working, try with IE)?

If you open Avast Main GUI → summary, wait several seconds with that tab open; do you see avast offers? (This last one is only when your valid license of AIS is still NOT inserted / incorporated, so AIS is working in “trial” mode and it shows ads in the summary tab).