Just got this email from Apple… What are some useful apps I should install on my second gen iPod before this happens?
On June 30, 2018, Apple will implement changes to continue to ensure your financial data is protected when you make purchases on the iTunes Store or App Store.
Our records show that you may be accessing the store from an older version of iOS, macOS, or Apple TV software:
iOS 4.3.5 or earlier
macOS 10.8.5 or earlier
Apple TV Software 4.4.4 or earlier
To be able to change your payment information with devices running the software listed above, you’ll need to update to a more recent software version.
iTunes Support Team