I am changing my app age rating from 4+ to 17+ but in the last section it ask two select in two option that is 1) keep existing rating , 2) reset rating when this version is released, which is the best option to select because in earlier submission my app

I am changing my app age rating from 4+ to 17+ but in the last section it ask two select in two option that is 1) keep existing rating , 2) reset rating when this version is released, which is the best option to select because in earlier submission my app age rating was 4+ now I am changing it to 17+

They're referring to the rating that customers give your app, not the age rating of the app. If you've gotten a lot of good reviews and ratings in the past, you probably want to keep the existing rating. If you've gotten a lot of bad reviews and ratings, you may want to reset the ratings.

I am changing my app age rating from 4+ to 17+ but in the last section it ask two select in two option that is 1) keep existing rating , 2) reset rating when this version is released, which is the best option to select because in earlier submission my app
 
 
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