When using Avast Internet Security 2019 it is impossible for me to connect to the servers used by the game. I have added all the .exe files associated with the game to the firewall exceptions, but sadly, this doesn’t suffice.
NOTE:The Network profiles control the settings which determine how strictly Firewall protects your PC.
Private: a lower level of security suitable for when your PC is connected to a trusted network such as your home or work network.
This profile enables better connectivity, and permits all communication within the network.
Public: a higher level of security suitable for when your PC is connected to a public network such as in a cafe or airport.
Because public networks present greater security risks, no incoming communication is permitted when this profile is set.