On the Account Settings drop down, you should have “Manage Payment Options”:
However, if you do go to All Settings first, then yes, “Online Payment Integration” would be the same option.
You should then see an “Activate” option for Stripe:
This would take you to the Stripe website, where you can create a new account. If you already have an account, there’s a “Login” option in the top right:
When you log in, you will just need to grant access to QuickFile, and in turn, allow you to enable the feed.
Hope that helps, but please let us know if you need further help with this