How do I progress to level 2?

I have been enjoying the mod launcher, along with your Donut Mod: Anniversary Edition and completed level one. I was surprised when the credits played after mission 7 - 'Crash and Burns'. No matter what I do, I can't find my way to level 2 when it should load directly after that mission. I really don't want to play the game without your mod now I've sampled it :( It's incredible work and a joy to play. Is there a way to progress? Or is the mod for level one only?

Creating this topic led me to a related topic where the answer is given. Please ignore the question aha. Great mod, I'll be on the look out for more :)
forum.donutteam.com/topic/5883-cant-leave-level-1