Welcome aboard to the Community. I'm here to lend a hand with your concern about accessing your data from a canceled QuickBooks subscription.
You can still access your data by logging into your account using previous login credentials. However, please note that you only have read-only access for just one year.
I'm linking an article with additional information on this, such as length of time the system stores your data on the system:
What happens to my QuickBooks Online data after I cancel?.
In case you're having trouble signing in, I'm adding the support article to help you retrieve your password or user ID:
How to reset your password or recover your user ID.
I look forward to serving you to the best of my ability so let me know if you need further assistance with accessing your data. I'll be sure to get back to you.