Well, it's in "beta" at the moment. Things are still being fixed up. The connection issues seem to have gotten worse after the last update, and I know they are working on it. Everyone gets disconnected often lately. Just a part of playing a game that is still being put together.
The reason it is so different than TSO is because they have changed the servers and are rebuilding the game from the ground up. It's not just the same TSO game it was. So they are bound to have problems here and there.
If you want to keep informed about the status and updates, join the FreeSO Discord channel. They announce and chat about it all day there: https://cdn.discordapp.com/attachments/131166361761087488/139161549255344128/discordmod3.zip