Hello there, Ashley.
Allow me to share the information you need to reactivate your canceled QuickBooks Online (QBO) account.
Yes, you're right. We can reactivate your canceled account if you want to access its data later.
However, if you have an active subscription from the time you canceled the account, you can export your data within a year. If the subscription is canceled during a trial period, your data will only be available for 90 days. After this period, Intuit will delete the data from canceled accounts.
Additionally, you may want to check this article to consider re-subscribing to QuickBooks Online: Resubscribe to or reactivate QuickBooks Online.
If you need further assistance or have any other concerns with your account reactivation in QBO, just comment below. The Community always has your back. Keep safe.