It's nice to see you here in the Community. I'm here to share some insights about connecting/syncing two American Express (Amex) accounts in QuickBooks Online (QBO).
In QBO, you can connect or sync two Amex accounts as long as they have different login credentials. In addition to that, you need to connect the second or additional Amex accounts through the standard Bank Feeds connection for American Express. Please note that when you connect your Amex account to QBO, you'll also need to be the Primary Account holder. Accountants who may have access to your account through a separate login will not be able to connect on your behalf.
To connect your Amex account, here's how:
1. Log into your QBO account. 2. From the left menu, select Banking then click the Banking tab. 3. Choose Add account on the upper right, then select the American Express tile. 4. Click the I've got this card button, then on the Connect an Account page, select the Enroll now button. 5. Next, you will be presented with the authorization details. Select the Connect button to authorize the app to connect to QBO. 6. A new browser tab/window will open up directing you to the Amex website, enter in your credentials and click the Log In button. 7. Once signed in, select the Statements & Activity tab, then click the Connect to QuickBooks button on the top bar. 8. Put a checkmark on the Credit Card you wish to sync with QBO.. 9. Click the Continue button, then Review and Finish setup by selecting the Finish Setup button.
That should help you connect/sync your Amex accounts.
Thanks for being a part of our QuickBooks family. Please let me know if you have additional questions or I can be of further assistance. I'm always here to help. Take care and enjoy the rest of the day.