quickbooks will not sync with bank account

Try opening your QBO account on any private/incognito browser.

Have you tried the manual update in QuickBooks to get the recent transactions from your bank? If you haven't already, just follow these steps:

1. Go to All apps, then click on the Accounting dropdown.
2. Select Bank transactions.
3. Click on the bank account that needs the transaction updates.
4. Hit the Update option.

Please note that while most banks sync with QuickBooks every 24 hours, timing can vary. Also, QuickBooks can only pull posted transactions, not pending ones.

Let me know if you have any other concerns.

Yes thank you. I have been manually adding the transactions. I just don't understand why I will not sync at all. 

I tried this and it makes no difference. 

I tried this and it makes no difference

Just wanted to add that quickbooks has not been self syncing for over a year. Now the manual update button doesn't work as well. I tried disconnecting and reconnecting the account. Nothing works. I have to download the transactions from my account and manually add them. It is quite frustrating. 

You can use csv2qbo converter tool as a workaround. It's a $60 one time license.

https://www.moneythumb.com/?ref=110