Hello there, @LarrysC,

I understand how it can be frustrating when the conversion tool isn't working. I respect your decision, but I want you to know that we're here to help complete the migration. 

For security reasons, running the tool needs the data access credentials. This is to ensure the correct Sage 50 company file is being converted into QB Enterprise 2019. To help fix this, I suggest going back to the first to the last steps through the article provided by my peers above: Conversion Tool. 

Once converted, the Enterprise version allows you to manage your accounting and business needs efficiently and with ease. To help you get more helpful tips, tools, training videos, and customer success stories, I recommend checking out our Customer Resource Center. 

In Community, we’re here on your side to get your questions answered. This way, it will help improve your experience. For more frequently asked questions about the program, here's the article you can refer to: https://quickbooks.intuit.com/enterprise/resources/faq/. 

Please know that I'm just a reply away if you have other concerns. Take care.