Ipad iOS 16.2 won’t play downloaded content from any streaming service.

Hello Stewart730,

Welcome to Apple Support Communities. 

We understand that you are not able to play downloaded content on your iPad. We are happy to help.

What is the exact error message you receive when trying to play the downloaded content? Let’s start by restarting your iPad using the steps here: Restart your iPad - Apple Support Restarting the device can resolve many concerns.

"How to restart an iPad without a Home button

1. Press and hold either volume button and the top button until the power off slider appears.
2. Drag the slider, then wait 30 seconds for your device to turn off. If your device is frozen or unresponsive, force restart your device.
3. To turn your device back on, press and hold the top button until you see the Apple logo."

Apple has released an iPadOS update recently. Please use the steps here to update your iPad: Update your iPhone or iPad - Apple Support These steps may resolve this.

"Update your iPhone or iPad wirelessly

1. Back up your device using iCloud or your computer.
2. Plug your device into power and connect to the internet with Wi-Fi.
3. Go to Settings > General, then tap Software Update.
4. If you see more than one software update option available, choose the one that you want to install.
5. Tap Install Now. If you see Download and Install instead, tap it to download the update, enter your passcode, then tap Install Now. If you don't know your passcode, learn what to do."

Let us know if you have further questions.

Take care.