Hello there. I appreciate you chiming in here and following the steps suggested above. I've come to help rectify your concern and get things sorted out for you.

With the new estimate interface in QuickBooks Online, this helps you improve user experience and compatibility of the program when sending these quotations to your customers. You'll want to consider performing some troubleshooting steps to help identify what's causing the issue even when you've followed the steps in the new interface. 

With this, we can rule out the possibility of a webpage issue. I'd suggest going through your account in a private browser and creating the transaction from there. You can use these keyboard shortcuts to open one:

• Google Chrome: Ctrl + Shift + N.
• Mozilla Firefox: Ctrl + Shift + P.
• Microsoft Edge: Ctrl + Shift + P.
• Safari: Command + Shift + N.

If Review and Approve link works, clear the cache of your regular browser.

However, if the issue persists, I'd recommend contacting our Customer Care Team to further check and investigate your account. They have the tools to review them and provide additional assistance to get things resolved.

I'm sharing these helpful references to guide you in keeping your work moving and getting paid faster: See what’s new with estimates and invoices in QuickBooks Online. You can also convert these estimates to an invoice once your customers approve them.

Feel free to leave a reply below if you have additional questions or other QuickBooks concerns. We'll gladly lend a helping hand to you. Keep safe!