how to check validness of promo codes?
We've sent about 30 promo codes to all download files mentioned in various blogs. According to iTunes Connect, only 3 promo codes were used during 3 weeks.
I would like to reuse remaining 27 promo codes for other reviewers. Is there any way to check promo code for being unused?
Also, unused promocodes are valid for current version of the app. If we release new version of the app, do promocodes generated for previous version become non-valid?
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