Unable to redeem app promo code?

I have an app under "Pending Developer Release" which allows me to generate promo codes.

I tried to redeem one of the codes on my iPhone via App Store and iTunes app but I'm getting an error message "MZFreeProductCode.NotRedeemable-ForIncompatiblePlatform".

I'm able to download the app via TF without any issues.

Any suggestions?
Sounds like an issue on the backend, out of your immediate control. Suggest you be patient and try again later.

Good luck.
Looks like I can't redeem the app promo code if the app is under "Pending Developer Release"
Same issue here, app is "Pending Developer Release". This was never an issue in the past.
Everybody still having this issue? The only way to test production in-app purchase receipts etc. is this method before releasing.

When I try, I get a confirmation that the app is downloaded but it never downloads, and the code becomes used so you can't try again. Tried on multiple devices and accounts.

I am still facing this issue, anyone know how to get it work?

Unable to redeem app promo code?
 
 
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