I have 100% on messages and despatch and 4.8 rating, but i haven't been awarded the ratings badge, so not classed as a start seller (yes, sales are high enough)
You had 39 reviews in Jan, Feb and March. your buyers deducted a total of 10 stars from those 39 reviews. That would put you slightly short of the 5 star average. 39 x 5 minus 10 stars = 185 total stars. 185/39 = 4.74.
You need to look at the stats for Last Period to see what you had for April 1st's badge. The SS page is showing the current stats for the Next badge.
You have 38 reviews in the last period, totalling 180 stars = 180/38 = 4.7 average.
It looks like you are on track for the badge next month but the star for this month was the previous 3 months.