My action button is not working at all. Watch is two days old. Anyone else having issues?

Hello Tolson1971,

Welcome to Apple Support Communities. 

congratulation on your new Apple Watch Ultra. We are happy to assist you in any way that we can. What is the exact error message that you receive, if any? What is the exact watchOS installed? What is the exact iOS version installed on your iPhone?

Apple has recently released updates for the Apple Watch and iPhone. We recommend installing these updates.

Update iPhone: Update your iPhone or iPad - Apple Support

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.

Update Apple Watch: Update your Apple Watch - Apple Support

Update your Apple Watch using your iPhone

You can wait until Apple Watch notifies you when a new update is available. Tap Update Tonight in the notification, then go to your iPhone to confirm that you want to update overnight. At the end of the day, leave your Apple Watch and iPhone charging overnight so the update can complete.

Or you can update your Apple Watch with your iPhone manually:

1. On your iPhone, open the Apple Watch app, then tap the My Watch tab. 
2. Tap General > Software Update.
3. Download the update. If asked for your iPhone passcode or Apple Watch passcode, enter it. 
4. Wait for the progress wheel to appear on your Apple Watch. It could take from several minutes to an hour for the update to complete. 

Here’s additional information using the button on your Apple Watch: Use the buttons and screen on your Apple Watch - Apple Support

Let us know if you have further questions.

Take care.

Did not help.