Could you add a limit to listing stations that are only on the current surface ? :)
When we try to teleport to a station that is on a different surface, we change location but stay on the current surface (and not the surface where the station is).
I'm so sorry for the very delayed response; you probably have forgotten about this or stopped using the mod. Looks like I'm not getting notifications from the portal, which is why I missed your comments.
I've updated the mod and added both of your requests: limiting the train station list to the current surface and adding a toggle for the shortcut button and hotkey. Hopefully that all works.