QB Issue Resolution:

QBO does not have a back up at all from the user perspective.  And when you close your account Intuit will only save the company data as a read only file for one year, then it is deleted  Рwhich does not help if an audit occurs in year 2 or 3.

The only real option to get all your data is to have an accountant log in and print or export to excel the general journal. (Or invite yourself as the accountant, create the log in, and log in as the accountant so you can use the accountant tools.) Due to QBO’s limited data handling capability that will probably have to be done in date segments.
(Note: simple start does not have a true general journal report at all.)

Resolution for Issue 'How can I download all transactions and backup myself?' available: Yes (Solved).
Source: Intuit Community forum.

How can I download all transactions and backup myself?: this issue or error code is a known issue in Quickbooks Online (QBO) and/or Quickbooks. Support for this issue is available either by self-service or paid support options. Experts are available to resolve your Quickbooks issue to ensure minimal downtime and continue running your business. First try to resolve the issue yourself by looking for a resolution described below. If it is a complex issue or you are unable to solve the issue, you may contact us by clicking here or by using other support options.

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