I'm encountering the same problem as some others where it won't allow me to continue the game after idling. If I refresh the page, I'm able to select "Continue" as normal. If I leave the page and then come back after a few minutes, progress is lost, except for importing. This makes it burdensome to progress past a certain point.
This makes me sad, because this is actually a really interesting idler, and I really wish more games would take some queues from it.