@gerdgoebel 

You are using QBD 2020 Premier, correct?

If you switch to QBO, you will need a 3rd party manufacturing app to integrate with QBO. I would recommend  to keep using your QBD 2020 Premier at this time. Prepare your bank statements or credit card billing statements in csv format and use an importer tool with the one time license to proceed.

https://get.transactionpro.com/qbd