COOP Career Broken

When we enter from lobby. It will load the host in, and I will be stuck on loading screen. I then restart whilst the host stays on the game and then it'll load me onto the workstation, but for the wrong track without the advance button available. I have tried restarts on both game and console. Cleared cache. Deleted and redownloaded data from cloud network. Deleted and redownloaded game. Several hrs of different attempts to fix, but it is fully broken.