We can not open the new invoice even in computer and phone login

We appreciate the steps you have made in accessing your invoice, JustNoodles88.

Since the invoice does not save after being created when you view the invoice page, I recommend clearing your browser’s cache or the application's data on your mobile device. Accumulated cache or data files can sometimes cause unexpected behavior, which may prevent the system from saving the invoice successfully.

Here’s how you can clear the data on your mobile device:

1. Go to your mobile's Settings.
2. Navigate to Applications or Application Manager.
3. Select the QuickBooks Online app from the list.
4. Tap on Storage, then select Clear Data.

To clear your browser's cache, please follow the steps outlined in this article: Clear cache and cookies to fix issues when using QuickBooks Online.

You can also use a different QuickBooks-supported browser and ensure that your current browser is both supported and updated to the latest version.

Once you have cleared your browser's cache or the data from your mobile applications, you can create and open your invoice again.

QuickBooks Online includes a feature that allows you to customize your invoices to enhance your business communication. Please check this article: Customize invoices, estimates, and sales receipts in QuickBooks Online.

Feel free to reply to this thread if you need further assistance.