Can't unpublished app from play store

When i click unpublished give error "you have at-least one active .apk " And also cannot update the app because key-store is lost... Any solution?

Though this is an old post, I thought it might be useful for other developers who are going through the same problem now. Google provides an issue reporting section which can be used to contact them if you are having some trouble with deleting your application from the play store. Here is the link.

Another way of unpublishing your application is to use the Pricing & Distribution section under the Store Presence section. You will see an option for unpublishing your app from the play store there as well.

Hope that helps!