My property is showing that it has no availability on our site from 8 Sept to 30 Sept.

Please check this matter quickly. 2nd 


This is the partner forum and not the help desk.  But you can do this yourself. 

To check your setup Open Rates & Availability, Calendar - use List view.  Dates should be in Green if available.  If not look at if Open/Closed, rooms available, Rates set.  You can use a Bulk edit to update if needed.