How did you fix the standard bank connection

Allow me to provide additional insight about fixing your standard bank connection concern so we can get this sorted out, millicent-mohau-.

QuickBooks Online is only dependent on the connection details that are shared from your bank. May I know what error messages you encountered? 

For now, I recommend running a manual update to your bank account to fresh its connection and download new transactions or  import your bank transactions by uploading a CSV version of your statement.

Here's how:

1. From the left menu, select Banking.
2. On the Banking page, select Update.
3. If prompted, enter your Multi-Factor Authentication (MFA) credentials and select Continue update.

Feel easy to click these links below to resolve other banking errors, missing and duplicate transactions in QuickBooks. 

• Fix bank upload errors in QuickBooks
• What to do if you get a bank error or can't download transactions in QuickBooks
• Exclude a bank transaction into QuickBooks

Please keep me posted on how it goes in the comments below. Let me know if you have other banking concerns, and I'll be glad to help. Take care and have a good day.