If you have 0 reach try these two methods, i hope these methods will help you better then fb chat.
Boost your post for $1- your reach will be fine as before. (You have to boost each post on your page) after the post has been aproved you can pause it.
Add new admin and also new editor, remove the old one.*1 Admin, 1 Editor (After 2 days your reach will be fine as before.)
Please let us know if it works for you too.