Download???

[gnd1]

I thought that this was supposed to download into your computer over the past month or so(after reserving it) making it a speedy and easy process. This morning there was no info of ready to go on my laptop(Win 7+) . The only hidden file that I found $windows.~BT was only 140 MB. Ok no big worries. I hadn't don't the previews so I could wait for it. Fired up my Surface3 and get notification that ready Windows 10 was ready for me to download! 2 1/2 hours later it finished. Now stuck on Preparing for installation for the past 40 minutes or so. Whats going on????