I try to updated system, but still can't workI enabled System > Settings > General : Prefer IPv4 over IPv6, but doesn't work.
This happened to me when I had no Internet connection.Verify these:1 - DNS is OKServices - Unbound DNS - General - Enable Unbound (checked) and Enable Forwarding Mode (checked).System-Settings-General-DNS servers (e.g. 1.1.1.1, 8.8.8.8 use gateway WAN).2 - Correct GatewaySystems - Gateways - Single"Upstream Gateway" in WAN