How to renew our subscription online and the promocode for the same

You have me to help you renew your subscription, rajkumar.

Let me guide you how:

1. From the Gear icon, select Account and settings.
2. Go to the Billing & Subscription tab.
3. Click the Already have an activation code? button.
4. Enter the promotion code.
5. Click Apply.
6. Enter the Billing Address details and check the Terms, Conditions checkbox and click Continue/Make Payment.
7. Select the payment options.
8. Once payment is made, your company account will get renewed.

Also, if you want to update your billing details, you can check this reference: How to update your subscription and billing details.

I'll be around if there's anything that I can help. Keep safe!