You're not the first to have done this, and I'm sure you won't be the last lol
Again, apologies for misleading people.
For anyone else who is looking at this when expired. To confirm it is a 1st episode free scenario as all the rest require in app purchases.
I can confirm that it's only the first episode that is free
Yeah, me. Also, it was just the 1st episode free, but they let you download the whole game. Apologies.