Hi there, @mberlo.

Let me help you fix the error subscription lapsed in QuickBooks Desktop (QBDT) so you can continue working with your account.

You don't need to worry about having the error subscription lapse. It won't affect the company's data. The first solution is to update your billing info in the Customer Account Management (CAMPs) portal. 

Here's how: 

1. Sign in to the Customer Account Management Portal (CAMPs) as an admin user.
2. Click QuickBooks Desktop from your products and services.
3. Choose details next to your QuickBooks Product.
4. Select Edit next to your Payment Method. Update your payment info. When you’re done, select Save and Close.
5. Open QuickBooks Desktop.
6. Go to the Help menu and hover over Manage My License. Then select Sync License Data Online.

If you still see the subscription error, install QuickBooks updates. You can read this article for detailed info:  Fix subscription has lapsed error in QuickBooks Desktop.

Concerning logging in online. It doesn't mean you have a QBDT account, you'll also have a QuickBooks Online (QBO) account. There's a need to have a subscription for this. The reason why a message "you don't have anything attached to your account" is shown.

You might want to update your password if ever you forgot it. Check out this article: Reset your password for QuickBooks Desktop.

For additional questions about logging into your QBDT account, click the reply button. I'll be willing to help. Keep safe and have a good one.

@mberlo 

Which QB Desktop year version do you have?

You can use the trial version as a workaround.