Highball Run 8 Multiplayer

I log into run8, select region, go to the extra board. I put in the data for the server in the client tab, When I click on join it goes through the connection process then gives me an error that there is a mismatch between host and client and bails me out

You have to make sure you have the latest updates. Both the latest update from Run8 and if it's a Southeast Region the latest update from https://hyrailsimulations.net/