Thanks for your interest in QuickBooks Online, @userjjmoeketsane.
I'll help make sure you can subscribe to the correct company or account.
First, you'll need to cancel the subscription for the new company with no data. This way, you can log in to the account with the correct info.
Once done, resubscribe to the right company. This time, please ensure to click the Sign in button.
If you plan to have multiple companies in the future, you can use the same login info. This way, you can switch between companies easily and manage your tasks more efficiently.
You can always comment back below if you have more questions about managing your QuickBooks account. I'd be glad to answer them for you.
You have to navigate to your Billing and Subscription menu in the trial account to pay the regular rate and continue your works.
Otherwise, you may migrate data from the trial account to the paid one by a migration tool.