Thanks for the question.
Is scratch a bad one is it deep and how many is there please.
This is the best way to remove the scratches on the oven door.Hope you have success with it.
The oven door glass is made of tempered glass. It was manufactured in compliance with strict safety regulations and processes to ensure consumer safety. The glass has a tin oxide coating to provide heat resistance. This coating may appear to have a "rainbow" effect. The rainbow coloration is normal.If the glass is nicked, bumped, or scratched, it can become stressed. Accidental door slamming can also cause glass stress. This may not be noticeable at the time it happens, but expansion and contraction from heating and cooling could cause enough additional stress to break the glass. If the glass does break, it forms small, round pieces instead of large, jagged ones, so injury is unlikely.
sorry thats what they suggest, and if you cant remove the scratch the glass can break while your cooking.