Steam Birmingham - Crewe And Unbranded Caltrain Not On Geforce Now

For context, I'm a Mac OS user, and play TSW using GeForce Now. I just bought the Birmingham - Crewe route and wanted to try it, however it seems the GeForce Now servers have not been told to auto download the add-on. This means it's not possible to play it. After quickly checking my addons when in the game, I also noticed that the unbranded Caltrain addons (specifically the peninsula corridor route as I do not own the two loco addons) also are not downloaded on the servers.

I would appreciate it if the addons would be pushed to the servers so players on GeForce Now can also enjoy the new route as well as the unbranded caltrain content.