Follow below troubleshooting steps to resolve below error show on your iPhone, iPad or iPod touch.
There was a problem with this download. Please check your network connection and try again. (10023-1200)
Solution: Check date and time on Apple iPad, iPhone or iPod touch
Basically this error points to information stored on the device that needs to be refreshed such as device’s date and time settings significantly different from the current date and time.
Step 1: Go to Settings > General > Date & Time.
Step 2: Adjust the date or time or simply toggle Set Automatically field to On.
Netflix Help Center: Netflix says ‘There was a problem with this download. (10023-1200)’