I have an item (a book) in my Amazon seller central account. The account is 'healthy' and the item is active. Until six weeks ago the item was being purchased successfully by customers at amazon.com.au. However whn I checked recently on the right hand side is a comment 'currently unavailable. We don't know when or if this item will be in stock.' And my book is not being found when its title is inserted in the search engine. SO I am not selling. So far as I know I have not done anything to cause this change. Has anyone had a similar experience and were they able to resolve it?

Also I have not been able to contact an Amazon consultant via seller central. When I tried the online process I was asked for an ASIN (which I found) and then for an FN?SKU. I found the SKU but this was too long for the FNSKU field. It also asked for an error code of which I have no idea. I find Amazon incredibly difficult to work with. Any help much appreciated.