Welcome to the QuickBooks Community. Let me help you get past the error code 103, jamie-totalglass. 

I appreciate your efforts in trying to resolve the issue. I've checked here on our end and there's no reported case for banking error 103 for Home Depot Commercial Card bank. This error message occurs when credentials entered into QuickBooks Online (QBO) don’t match your financial institution. The following are the possible reasons why you receive this banking error:

• You have entered the wrong credentials while trying to connect to your financial institution for the first time.
• You have selected the wrong financial institution (there are often many to select from).
• If you are currently connected and you’ve updated your credentials with your financial institution, you need to update the information in QBO.

For first-time connections, make sure you can log into your bank outside of QuickBooks by going to your bank’s website. Then ensure your credentials are entered manually(instead of allowing your computer to auto-fill it). If you’re able to log into your bank’s website, try to connect again through QuickBooks and manually enter your credentials. If the error persists, try connecting using the steps below:

1. Click Banking from the left menu and select Add account. If you already have an existing bank account in your Chart of Accounts, you can go to the Action column and select View register (or Account history) drop-down, and choose Connect bank.
2. In the search field, enter the full name of the bank you’re trying to connect to or enter the bank’s URL.
3. If multiple results are displayed, select the bank name in the list for your account.
4.  Log in with your user ID and password.
5. If you receive the error 103 again, select the Go back button and the next name on the list. Then, repeat this process until you find the correct website under the bank name and you have successfully connected to your account.

If you can’t still find or connect to your bank, refer to this article for more troubleshooting options: Find your bank or credit card account when you connect to online banking. We can also manually import your bank transactions using a .CSV file, just check out this article for more details: Manually upload transactions into QuickBooks Online article. 

Feel free to visit our Banking page for more insights about managing your bank feeds and reconciling accounts.

You can always update us on the result after performing the recommended solutions as I'd like to ensure this is resolved for you. Just leave a comment below and I'll get back to you. Have a great day ahead.