Strange subscription refund in Sales & Trends

Hi,


I have app with subscriptions (week, month & year). Yesterday in my stats appears strange refund.

In Subscription -> Summary I see 1 refund


https://www.dropbox.com/s/fep6licwa3myhcu/Screenshot%202020-02-10%20at%2016.01.56.png?dl=0


In Sales -> Units I see "-8" in graphics and -4 in stats if I fltered by territoty.

https://www.dropbox.com/s/tiwb89tc2bujofc/Screenshot%202020-02-10%20at%2016.04.18.png?dl=0


https://www.dropbox.com/s/pyjgk50f1hrbu29/Screenshot%202020-02-10%20at%2016.05.16.png?dl=0


I don't understand what this mean. Is it correct ? Where I can send message about it, for check ?


Thanks