Purchases cannot be transferred from iOS to Android. To solve this issue, please:
1. Request a refund from https://support.apple.com/en-us/HT204084 or https://support.google.com/googleplay/answer/7018481 depending if your purchase was on iOS or Google Play Store.
2. Send us an email with your purchase receipt with "Migration" as the subject to support@appairbrush.com