True, I can see both wireless charger and extreme sports band available separately but still couldn't understand why it is showing out of stock on redeem page.
I got my product on Sep 11th and I was able to get to redeem page today. Yes I was able to do it on Samsung Shop app using serial no and registered mobile number
You should be able to redeem it very soon. Even I faced this issue and I was able to get to redeem page today. Unfortunately only buds pro is available to redeem. Rest are out of stock.