Why 24 days didn't get any knock or orders

[erfankamrul]

Last 24days ago I completed my 12th number order but the buyer didn’t give feedback.
Then I get two knocks but the order is not converted and then the last 24days I didn’t get any knock. Here is my gig Please check and let me know why I didn’t get knock or order.
My gig: https://www.fiverr.com/share/jy59X9