Stuck in Sandbox Environment

### Platform

- [x] iOS
- [ ] macOS
- [ ] tvOS

### In app purchase type

- [x] Consumable
- [x] Non-consumable
- [ ] Auto-Renewable Subscription
- [ ] Non-Renewing Subscription

### Environment

- [ ] Sandbox
- [x] Production

### Version
0.13.2

### Related issues

## Report

### Issue summary
When making a purchase in production mode, it still says `[Environment: Sandbox]` in the popup. To reproduce, make the call:

```SwiftyStoreKit.purchaseProduct("myProductKey", simulatesAskToBuyInSandbox: false) { (result) in myclass.run() }```

### What did you expect to happen
It should be in production mode.

### What happened instead
The IAP was made in sandbox mode instead.