Unfortunately, the counter installed on the site duplicates data in e-commerce. Each sale counts not as one, but as two. Update.
I checked it
My site is moonbracelets dot com
And there is only one counter of Yandex metrica
Thank you for reaching out. Please, make sure that there is no additional Yandex.Metrica counter code added manually on your site. This is the most possible reason for such problems. Please, remove this code, if you find it.
Please, let me know if it helps. I created a ticket in our system, where provided you with the reply as well, we could continue the communication there.