Unable to figure out how to connect Solopreneur to American Express Business Credit Card & Checking (US).

I know how this can be confusing when linking an account, and I completely understand your frustration @fleurishplantcare.Based on what I've tested myself, I also can't locate the American Express Business Credit Card & Checking (US) when attempting to link an account. 

As a workaround, please visit the website of your bank to verify the correct URL for the primary account holder. It’s possible that the URL for the primary holder has been updated, leading to the issue you're experiencing while trying to link the account.

On the other hand, you can manually import your transaction while working with the connection of your bank.

Here's how:

1. Navigate to the Transactions menu, then choose Bank Transaction.
2. Select the Link account▼ dropdown, then select Upload from file.
3. Click the Drag and Drop or Select Files and choose the file you have previously downloaded from your bank, then select Continue.
4. From the QuickBooks account dropdown menu, choose the specific account you want to transfer the transactions into, then click Continue.
5. Complete the onscreen instructions to align the columns from your file to the appropriate fields in QuickBooks, then click Continue.
6. Select the transactions you wish to import, and then click Continue.
7. Click Yes, then hit Done.

Once your bank is linked with QuickBooks, you might notice duplicate transactions due to both manual imports and bank connections. To prevent redundancy, you have the option to exclude these duplicates from the transactions downloaded from your bank.

Moreover, you can refer to this article to learn on how to reconcile an account: Reconcile an account in QuickBooks Online so they always match your bank and credit card statements.

Additionally, I'd like to introduce our QuickBooks Live Bookkeeping Assisted to ensure your financial records are accurate. We have experts who can help you with matching, categorizing, and reconciling your transactions. This service will save your valuable time so you can focus more on growing your business!

If you still have questions regarding linking your AmEx account in QuickBooks, let us know by replying to this post. I'll be around to lend a hand on you!