Received an email response from amazon.com:
I'm sorry for any inconvenience caused downloading sample and purchased books on your HP TouchPad tablet.
I've checked your account and see that the books are waiting to be delivered wirelessly.
When using the Kindle for webOS app, please make sure your HP TouchPad is connected to a network before launching the application. Most issues with downloading content and shopping in the Kindle Store are due to a bad network connection.
Once you launch the Kindle application, your books will download and appear on the Kindle application's home screen.
If books doesn’t appear on your home screen automatically, please download it from your Archived Items:
1. Launch Kindle for webOS on your device.
2. Tap the Kindle menu in the top left corner and then Show.
3. Select Archived to show your Archived Items.
4. Tap on the item you want to download. It will begin downloading to your Kindle library.
5. More information about the Kindle application can be found in our Help pages here:
For your information:
You can sample many Kindle books for free by clicking the "Send sample now" button when shopping in the Kindle Store on the website, or by clicking "Try a sample" from the Kindle Store on your device. We'll send an excerpt to your Kindle device or Kindle reading application wirelessly.
Unlike Kindle books, the Kindle content samples you download aren't stored on Amazon.com. As a result, Kindle content samples will not sync between your Kindle devices or Kindle reading apps. To read a sample on a different Kindle device or Kindle reading app, you'll need to download it again from the product detail page and choose to have it delivered to a different Kindle device or Kindle reading app.
If you'd like to purchase the full version of the Kindle book, there will be an option to buy the title at the end of the sample. Your sample will not sync with the last page you were on when you download the full title. Once the title downloads to your Kindle, you'll be able to navigate to the last page you were on by using the "Go to" menu.
In case your having trouble after trying the above mentioned steps, I'm not sure which part of the process or step was causing the problem. We need to have few more issue related information to isolate the completely.
I request you to please contact us via phone or chat, so that we can try some real-time troubleshooting and help you in getting this issue resolved as early as possible.
• To contact us via phone:
• To contact us via chat:
Please be informed that when you contact us via phone or chat, we can also loop in our technical team into this issue and get the best possible solution for your problem.
Your understanding and co-operation on this issue is appreciated. We look forward to see you again soon.
I rebooted the TP and it had again become the default in the "Deliver to" box. Everything now works as expected.
Sorry to waste everyones time.