How do I covert my data from quickbooks online to quickbooks pro? QBO is not working for us.

Do you need to migrate data from QBO US version to QBD US version? Visit the following reference

https:// quickbooks.intuit.com/learn-support/en-us/help-article/import-export-data-files/export-convert-quickbooks-online-data-quickbooks/L0tKtLwhn_US_en_US

You can still purchase QBD 2021 Pro/Premier with the one time license if required. Otherwise, purchase a 3rd party conversion service.