I purchased 5 books from google about 10 months ago and now they are gone from my tablet.  I also checked my google play account and they are not there.  What happened to them after I sent google the money so you would think I would own them and not have them disappear. 
I also tried to download a video from a web page.  It said it downloaded but could not find it.  I did find the name in "downloads" but there was no way to play them. 
Any ideas as to these problems
Still very disappointed in the nexus.