I'll help you start a new account with your existing data, cha_lao.
We're unable to extend the free trial of QuickBooks Online. When the trial expires, you can sign up for a new account until you receive the credit card.
You can visit our website to resubscribe to the same QBO version that you have right now: https://quickbooks.intuit.com/pricing/. Once done, you can export your lists from your existing company file to an Excel spreadsheet. Finally, import them into your new QBO account. Here's how: Move your lists to QuickBooks Online.
As for the transactions, you can reenter them manually or use online banking to import them into the program.
When you have the credit card and need help with entering it in QBO, just let me know. I'll be around to give you the steps.