please give us exact date
I suppose in your defense it's not an exact date but, believe it or not, they told you twice already. Asking multiple times isn't going to make it change or happen any quicker, it just makes you really annoying and entitled. Especially if we take your previous posts into account.
our public release is now a chapter or version behind the exclusive release
On the off chance you don't understand what they mean, they're saying that the public release of Chapter 20 will not be until the exclusive release of Chapter 21 comes out. So on and so forth for the rest of the chapters.