Hi there! I understand how frustrating it can be when you're trying to change your pickup time, and it's not working at checkout. Let’s try to sort this out together.

First, can you tell me if you’re using the Giant Eagle app or the website for your order? Also, are you getting any specific error message when you attempt to change the time? This information can help me assist you better.

In the meantime, here are a few general troubleshooting steps you can try:

1. Refresh the Page or App: Sometimes, simply reloading the page or restarting the app can resolve temporary glitches.

2. Clear Cache: If you're using the app, clearing the cache can help. Go to your device settings, find the Giant Eagle app, and clear its cache.

3. Check Time Availability: Ensure that the time slot you want to change to is actually available. Sometimes, slots fill up quickly, especially during busy hours.

4. Try Different Browsers or Devices: If possible, try accessing your order from a different browser or device to see if the problem persists.

Let me know what you find out and we can explore further solutions if needed!