Endurance was not available yesterday because there has been a small error for me to deal with.
The error is small but needs to be dealt with. There has been an issue with the distribution of the book. I am speaking with Amazon to sort it but in the mean time, I am not entirely sure when Endurance will be available.
I am hopeful it will be available this week, latest the weekend, but we will have to be patient.
I will keep you updated when I know more…