Button is red
No special network
When I change from auto-connection to manual selection and select a server nothing happens or changes, ecpt the name of the servere in the server field changes to to the server I selected
Try right-clicking on a server in the list and click "Use as server". The network icon should turn green. If it doesn't, check if your AV or firewall is blocking some outgoing connections.
Also, can you confirm what version of Windows and Electrum you are running?