I am trying to synch my quickbooks with my on-line version and it says it cannot do it because my on line version has been canceled

Yes, you're right, @tasha6.

We're unable to make any changes to an inactive account. After the cancellation, you only have a read-only access to QuickBooks Online data for one year.

You have the option to reactivate from the Accounts and Settings page. I'll guide you how.

1. Go to your Gear icon and choose Account and Settings.
2. Select Billing & Subscription and click the Resubscribe link.
3. Enter the new billing information. Then, select Subscribe.

Once done, you can refer to these articles for more info about converting QuickBooks Desktop (QBDT) data to QuickBooks Online (QBO):

• Move your QBDT file to QBO
• FAQs about converting from QBDT to QBO
• What to expect when you switch from QBDT file to QBO
• How to fix errors when converting from QBDT to QBO

I’m always here if you have additional questions or concerns. Have a great day.

@tasha6 

You are unable to sync QBD and QBO. They are both living in 2 different realms. You may deploy a private cloud for your on premise QBD to access the data by internet connection, or put your license and company file(s) on a QB cloud hosting.