(Demo) Tutorial 1 – Crash
If one builds more than one stone furnace and then interacts with other than the oldest one currently build the tasks do not progress. But one should ideally be able to continue in the tutorial with any of their furnaces, not just the oldest build one.

Building furnace F1 ...

Hi, there is extra word in https://factorio.com/support/help.
"My Steam key was says it is a duplicate.": remove "was"