Can not able to connect bank account

Let's get your account connected, yogeshm.

Which bank are you trying to connect? Did you encounter any specific errors? For now, you can follow the steps below to connect your bank account. Be sure to select the right financial institution and enter your bank's URL and login correctly.

Here's how:

1. From the left menu, select Banking, then Banking.
2. On the Banking page, select Add Account.
3. In the Search field, enter the bank's URL (example: http://www.chase.com).
4. Select your bank. If you see multiple options, you may have to repeat these steps to find the correct one.
5. Enter your bank login on your bank's website, then select Continue.

The articles below are good references for other troubleshooting steps in connecting your bank in QuickBooks Online: 

How to fix banking error 103

How to Connect Bank & Credit Cards

Alternatively, if you still can't add your bank, as a workaround, you can add an account in the chart of accounts and bring in the transactions using a WebConnect file. You can download the last 90 days of transactions using this feature.

Don't hesitate to drop me a line if you have other concerns about connecting bank accounts in QuickBooks Online, I'll be around to help. Have a good one. Stay safe!