I hate the Star seller program. I have a 1 star review....and 14 new 5 star reviews and I my number 4.6 hasn't changed. Etsy sucks...I know I am a star seller I have only 2- 1 star reviews since 2014. This program ridiculous. If 1 single 1 star review and can completely destroy like 720 5 stars... how does that help a seller.
Because nothing about the review system makes any sense.
Your actual Shop Reviw Rating is a 365 day "lookback". Your score for the past 365 days is 5 Stars, represented by the 'Black" stars at he top of the Shop Front page
For Star Seller Program Rating the Last Review Period (Badge which is currently showing in shops) is 01 May to 31 July. For this period you have 13 reviews with 59 Stars in total. 59/13 = 4.53
For Star Seller Program Rating the Current Review Period (Badge which is will be showing in shops from 01 Sept) is 01 June to 31 August. For this period you have 14 reviews with 65 Stars in total. 65/14 = 4.64
SSP requires an "average" of 4.8 to qualify for the "Star" metric