Originally Posted by mjp031
3- When I read that particular book that I have to re-download the ereader stays on until it I turn it off or the battery runs out. It never goes into sleep mode once I start reading that book (IE I place the book down for 20 mins and come back and it is still on).
This is normal. Kobo app isn't supposed to go to sleep when a book is open. This is to avoid something going to sleep while someone is in the middle of reading a page.
As for some of your other problems, did you check the date and time? If it is off, this can affect your bookmarks.