The new AMEX connection constantly shows new transactions but never actually lists them and the number grows daily.

I appreciate the details you’ve shared, @CColotti.

Currently, we’ve received a report about this new AMEX connection issue with QuickBooks. Our engineers are currently working on a fix. 

While this issue is under investigation, I recommend giving our Customer Care Team a quick call so you'll be added to our notification list of affected users.

Here's how to contact them:

1. From the Help (?) icon, click Contact Us.
2. Enter your concern about the AMEX bank connection in the field.
3. Hit Let’s talk.
4. Choose to Get a callback.

You can present this investigation number INV-46019 as a reference to the representative who will be assisting you. Once added, you'll get a notification via email when the update is available.

In the meantime, consider adding your transactions manually through the Web Connect process. You can check this article for more details: Manually upload transactions into QuickBooks Online.

You might also want to read this article to learn how to match bank transactions: Match, and Categorize your Bank Transactions in QuickBooks Online.

Thanks for your patience. Please know the Community has your back if you have any other questions. Take care.