You already billed me but i cant use all the benefits because my account is still on trial. May i know why? Please reply asap.

If you clicked the Buy button, your account is not in trial mode. You don't need to submit any credit card credential to open a trial account.

https://quickbooks.grsm.io/EU

https://quickbooks.grsm.io/Asia-Pacific

Hello, qsmegamajutradin.

I understand the urgency of your account. Let me provide some information about QuickBooks Online.

The first month Quickbooks for trial the next you need to make a payment. Once the account reaches more than a month and it's still on a trial version. I suggest contacting our support. Since the Community is a public forum, I am unable to provide sensitive information for security purposes.
 

You can follow these steps while logged in to your QBO account:

1. Go to Help from the top right.
2. In the Assistant tab, enter talk to a human in the Type something field.
3. When it asks your concern, provide a brief description to get your refund.
4. Click I still need a human and then select Get help from a human.
5. You'll opt to choose to Start a live chat or Get a callback.​​​

To call them at your available time, you can check the support hours in QBO.

Additionally, I've added this article that'll help you on how to resubscribe QuickBooks: How to resubscribe or reactivate QuickBooks Online.

Please don't hesitate to comment below if you have other concerns about managing your QBO account and subscription. I'm just around to help. Take care always.