Join the Unofficial 3Dash Discord Server: https://discord.gg/sAP37qxX98
Sadly, as far as i'm aware, the servers for 3Dash do not work.
However, you can download this and it does work and I suggest you do so: https://3dash.mg95.dev/ If you do come across any problems, ask MG95 on Discord (MG95#9595)