Let us know in 300 rounds if its now shooting to the right. I had my shield and it was to the left for me and my son and the range master. None of us had ever shot a Shield. I did a lot of dry firing to learn how to keep the gun steady and not move when I pulled the trigger. Ran about 300 rounds through it for practice and it now shoots dead on. It was me not the gun. If it wasnt the gun you can always move the sites back. I was low and left first time I shot a glock 19 too.

either way you can always set it back you need to. It could have been off but the standard reason for low left is new gun. Good luck