Can I get a refund?
In principle, all sales through the Apple App Store are final, with the sole exception being transactions through an App Store in the EU (unless the 14 day withdrawal period is waived during transaction).
Additionally, since Apple completely manages all transactions, there is no way for developers to provide refunds.
However, you can contact Apple Support directly to see if they are willing to make an exception to their App Store policy.
More information can be found on this Apple Support page: https://support.apple.com/en-us/HT204084