I see how this bank connectivity issue with TD Bank in QuickBooks Online (QBO) has been a persistent challenge for you, impacting your day-to-day operations, Nousernames. I’m committed to assisting you throughout. I have a set of proven solutions that will help resolve this problem swiftly, allowing you to focus on what you do best: running your business.

Before we get started, please share if you've experienced any errors while trying to connect to TD Bank. Any additional details you can provide would be beneficial for us to ensure we offer you the most effective resolution.

You can start troubleshooting by manually updating your account to bring in transactions and refresh the connection between your bank and the program. Here's how:

1. Go to the Transactions menu, then Bank transactions.
2. Select the blue tile for your linked account.
3. Click the Update button.  

After that, sign in to your financial institution's website to check your account for messages or alerts that need your attention. Once you make changes on the page (for example, login credentials and account info), update QuickBooks as well. Here's how: 

1. Go to the Banking or Transactions menu.
2. Select the blue tile for your linked bank account.
3. Click the Edit icon.
4. Choose either Edit sign-in info or Edit account info. 

If you encounter faults or any issues while downloading your transactions, check out this article to guide you on how to fix them: What to do if you get a bank error or can't download transactions in QuickBooks Online.

If this matter continues, you can download your missing transactions manually and import them into QuickBooks.

Once the connection is fixed, your most recent transactions will download. Ensure to categorize and match them to maintain the accuracy of your financial data. Then, reconcile your accounts so they always match your monthly statements.

Additionally, have you had a chance to hear about our QuickBooks Live Expert Assisted team? They specialize in simplifying the way you sort transactions and handle your finances. I recommend exploring their services—you may find it to be a game-changer for your accounting process!

I'm just a reply away if you have any other banking concerns or issues managing your transactions in QBO, Nousernames. Don’t hesitate to reach out any time, because I'm always ready to help you out. Enjoy the rest of the day!