Hey,
I get this error for following website:
Sorry, couldn’t create Kindle file. Please try again or report the problem.
http://batteryuniversity.com/learn/article/charging_lithium_ion_batteries
The preview looks good and the app works good for other sites. I tried to click Send! several times in last 5 minutes.
I don’t see see kind of error in your standard bug form (link below), so I’m posting it here.
Cheers,
Jakub