Is QBO having issues connecting to Amex credit card

Welcome to the Community, @colin-c-and-c-el.

Thank you for alerting this connectivity issue between QBO with Amex Credit Card to us. Currently, we haven't seen any reports the same as what you're experiencing right now.

In your case, I suggest checking the Banking page if there's an error message so you can send it to us. This way, I can provide you with proper steps to resolve banking errors in QuickBooks Online.

In the meantime, if you have attempted to reconnect your Amex credit card, I suggest disconnecting and reconnecting the account instead. In this manner, you can reauthorise an expired connection.

Before disconnecting and reconnecting your Amex credit card account, ensure no transactions are sitting in the For Review tab. We advise you to match or add them first. Here's how to disconnect your credit card account:

1. Go to Bookkeeping, select Transactions, then select Bank transactions.
2. Select the bank account you need to disconnect.
3. Select the pencil icon✎, then choose Edit account info.
4. Tick Disconnect this account on save.
5. Select Save and close.

Then follow Step 3: Reconnect the bank account from this article: Reconnect your bank account in QuickBooks Online.

Additionally, once your connection looks good, here are a few things you want to know about adding or matching bank feed transactions.

Let me know if you still have issues after doing that, and share some screenshots. I'll be here to assist. Take care!