Awful and non existent customer service. They have a rating of 1.3 on Trustpilot so unsure how they have 4+ stars on here. Very sus. To cut a long story short i've spoken to around 16 different "kdp agents" since 27th April and none of them can tell me why i am not able to preview my own book or why i am not able to upload a new version and instead i just keep getting constant error messages. Even the alleged supervisors just keep repeating themselves like robots, none of them seem to be able to listen to facts or resolve anything at all. I am genuinely wondering whether its all just a big scam. None of the reasons they've given make any sense whatsoever. And they just keep repeating themselves over and over. Ive been trying to resolve this for 16 days. You can imagine how angry i am. I would recommend anyone to go elsewhere save yourself the stress.