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How are you wearing it. Is it touching surfaces all the time? I do have a screen protector on mine search amazon for them.
But I suspect you are wearing it wrong where it can be easily scratched. Needs to be worn with the face pointing up on the wrist.
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A warm welcome to the Community @SunsetRunner. If your Blaze display is getting scratched, I recommend contacting our Support Team, for a faster response you can contact them via phone or chat. If you can take a picture of the tracker would be perfect.
I hope this helps, let me know the outcome. 
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