Thank you for being a part of the QuickBooks Community, Jennifer. Let me help you get past the error code 103.

Before that, may I know which bank you are trying to connect with QuickBooks? Any additional information would be greatly appreciated to help us identify the issue and find the best solution.

Please know that Error code 103 in QBO indicates that the login credentials you provided do not match the information your financial institution has on record.

Any of the following primary reasons can cause the error:

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

To initially resolve the issue, let's enable third-party access if your bank necessitates it. Certain banks may require your permission to link your account to another service, including QuickBooks Online.

Once done, enter your bank sign-in info in QuickBooks. For an existing connection, here's what you need to do:

1. Navigate to Bookkeeping, then Transactions, and select Bank transactions (Take me there).
2. Choose the bank or credit card account you need to update.
3. Click Edit ✎.
4. Select Edit sign-in info.
5. If your web browser auto-fills the user ID and password fields, clear them. 
6. Manually type in the user ID and password for your bank account. If your bank offers a Show option, select it to confirm that you entered the password correctly.
7. Lastly, click Update.

If this is a new connection, please refer to Step 3 in this article for further information: Fix bank error 103 in QuickBooks Online and QuickBooks Self-Employed.

If you're bank feed is also not updating, we can perform some troubleshooting steps to fix this. 

There are instances when the browser is full of commonly used page resources, which results in errors or odd behavior. Let's use a different or private browser to view your account. You can use either of these shortcut keys to access one:

• Google Chrome: Ctrl + Shift + N
• Mozilla Firefox: Ctrl + Shift + P
• Microsoft Edge: Ctrl + Shift + P
• Safari: Command + Shift + N

You can also get transactions from your bank or credit cards and manually import them into QuickBooks Online. For more details, please check out this link: Manually upload transactions into QuickBooks Online.

After trying the above steps, please leave a comment below to inform me of the outcome. I'm available to provide further assistance. Take care!