Can we share our subscription on the same email between companies? When I try to activate my trial i mistakenly opened another company file on the same name.

Thanks for reaching out to the Community, @zenithhapu.

You can have multiple companies under the same QuickBooks Online (QBO) account. However, each company file requires its own subscription. Visit this article for more details about this: Create or add another company file to QuickBooks Online.

I recommend you reach out to our Customer Care Team  to get the billing handled so you can continue using the preferred account.

Otherwise, you have the option to manually transfer your data from the QBO trial account to another QBO company. Once your trial expires, data will be available for 90 days. Here's how you can export them within the period:

1. Select the Gear icon from the toolbar.
2. Under Tools, select Export Data.
3. On the Reports tab, set the date range.
4. Add or remove items from the Reports and Lists tabs by toggling the slider.
5. Select Export to Excel.

For detailed information about this process, check out this article: Export data, reports, lists, and more from QuickBooks Online.

After exporting the data, you can now import the data into your subscribed QBO company. Please refer to this article for more information about the importing data process: Common questions about importing data to QuickBooks Online.

Nonetheless, I'm attaching these resources that can efficiently guide you in supervising your account:

• Edit company settings in QuickBooks Online
• Get started and adjust settings after you sign up for QBO

Please don't hesitate to reply to this thread if you have any other questions regarding your QBO account. I'll be here ready to answer them for you. Keep safe!

@zenithhapu 

Open your trial account as the Primary Admin. navigate to the Billing and Subscription menu. and pay it. You can't transfer the account unless you migrate the data manually.

https://quickbooks.grsm.io/EU