[Mortiferon]

Hi all.

Received the Fire HD 8 tablet for my birthday for eBooks. But, all I am actually reading on it is:

"Invalid Item: This item is protected with DRM and cannot be read on your Fire. Please remove the item from your device and download it again or purchase a copy from the Kindle Store."

These are not bought/sold eBook files but those that I have compiled and created myself from scratch of FanFiction in Word 2007 .DOCX converted to .AZW3/.Mobi with Calibre. Ergo, there is actually no DRM/Copyright-whatever. To clarify, I have attempted both .AZW3 and .Mobi formats.

Amazon's bought/sold eBooks, of course, work fine. Just none of MY eBook files.

I transferred them, with Calibre, via USB off my Desktop to the Fire tablet. To internal memory.

So... what is the problem? By all accounts I ought to be able to do this without issues, so . . . ?

And yes I have attempted to deregister and reregister the Fire device. I have also forced stopped and cleared cache of all apps and I even 'restarted' the Fire (holding the power button down 30 seconds), etc. etc. etc. and 'sync device' (with Amazon account, I presume). I have not attempted factory reset and nor would it have any salutary effect as this is a brand spanking new Fire.

Nothing is helping this problem. And this is the sole use/reason I wanted a tablet...

S.O.S. Please help!