He has paid Quickbooks charges this month and then tried to exportbank transactions from an online account. Unfortunately he's missing 6 months data

Hey there userallprodriver-inf,

Thanks for reaching out to us here. QuickBooks Online is a great tool that allows you to connect your bank account to your QuickBooks account in order to upload bank transactions. Being able to upload missing transactions correctly is important. I would be happy to provide some information on missing transactions.

In order to retrieve missing bank transactions, you'll have to manually upload them into QuickBooks. Here is an article that will help with step by step instructions on how to Manually upload transactions to QuickBooks Online. If you need further assistance, I recommend reaching out to the support team outside of the Community. They'll have the ability to verify your account details in a secure setting, as well as view your screen to better assist you. You can reach them by following one of these methods:

Schedule a Callback or start a Chat: click (?)Help in the upper right > type and enter "Contact support" into the QB Assistant > click Contact Us > explain your situation > click Let's Talk > choose Get a callback or Start a Chat.
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If you have any other questions, feel free to reach out here.