A warm welcome to you, Cindy.
I recognize the importance of retrieving your data, and it'll be my pleasure to help you. To do so, I need more information to provide a more appropriate resolution.
Let's start by specifying the data you're trying to regain in QuickBooks Online. Are these transactions, a list, or other data? Can this be payroll, money in/out transactions, voided, or deleted entries?
We also need to check the plan you subscribed to. Is it Simple Start, Essentials, Plus, or the Advanced version? Please also share if you encountered any errors during the retrieval process.
Know that any additional details would help determine the reason why you cannot recover the data. We'll be on the lookout for your response.