I paid the subscription for this service on phone. But it was not reflected yet, so I don't use the service. I am wondering how it went?

Good day, hanpil-dbinsus-g. 

Let me help you by making sure you'll be able to use the service you've paid for in QuickBooks Self-Employed. 

To verify, we can log in using your full email address or frequently used user ID. This is for us to check the account that you've paid.

If you're still unable to get the paid account, I suggest contacting our Customer Care Team. They have the tools to review the status of your paid subscription. 

Here's how to reach them: 

1. Click Assistant.
2. Enter "I need a human" in the field twice.
3. Click I still need a human.
4. Select either Message an agent or Get a callback.

To make sure you get prioritized on your concern. Please check out our support hours and contact us at a time convenient: Support hours and types.

I've added this article to learn more about managing your billing information, payment method, and subscription level in QBO, consider checking out this article: Update billing, payment, and subscription info in QuickBooks Online.

Keep me posted if you need additional information about managing your subscription. Don't hesitate to leave a comment below and I'll get back to you. Have a good one!