IU have a problem with updating my listing and calendar

[Yvonne43]

I regularly edit my listing description and make additions and amendments to my calendar, and yet the front page of advertisement says that it was last updated on the 3rd July.  In the past, when I made changes, the update was shown quickly and automatically.  Please can anyone tell me what has changed, and what I need to do to update my listing and calendar.   

Many thanks in advance.