You need to contact the guys who made the app - NOT Apple, and NOT the Bitcoin Foundation!

app.breadwallet.com

I haven't used bread wallet - I didn't like the fact that they don't use the normal Bitcoin symbol and lingo, but I'm guessing you can back up your wallet by doing the backup phrase. Then try deleting the wallet from your iPhone, reinstalling it, restore the wallet by using the backup phrase, and then try to spend again. Be sure to back up the wallet before deleting it, or your bitcoins will be lost forever!!