Good morning or afternoon, I don't know if the developers already know this, but there's a way to advance to the train level and the next one: by downloading the demo and completing it, and then downloading the test version (In my case, Android). Just when you click refresh you can continue but it's very buggy, which is normal because the area isn't complete.
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Dev here! Yeah that sounds accurate. The latest demo had some major refactors so you're essentially trying to combine two different versions of save data into one and then utilizing old mechanics with new variablese/data so, that would definitely bug out!
We're working every single day on pushing things forward!