Fiverr Community Forum

Why decrease gig rank after gotten 5 star revie?

I am beginner on fiverr already I have gotten 4 orders and also I achieved 5 star review for all orders. It is need to say that I have gotten all orders from 1 buyer.
Please send tell me about those.
Here is my gig link
https://www.fiverr.com/s2/ebfaf6407e?utm_source=com.google.android.apps.docs_Mobile