Just FYI, customer service got back to me and asked me to try and direct connect to the server and turns out my server is up and running! It wasn't showing on the server listing or in my steam server favs either so I just assumed it wasn't up. Try to direct connect and see if yours is up.
My server has been down since yesterday as well. I've tried removing my mods, cleaning mods folder, update/validate, cleaning steamCMD folder, multiple restarts and nothing has helped so far.