Hi there, MC98. 

Thanks for bringing your question forward here in the Community. I want to make sure you're able to get the validation code for your QuickBooks Desktop account.

I recommend reaching back out to a member of the Desktop Support Team. The following link will allow you to get in touch with the correct department outside of the product: Contact Desktop Support Team

Additionally, this article offers solutions to fix activation, license, and product numbers issues.

You'll be back up and running soon. Please feel free to reach back out here if you have any other questions or concerns.