Thank you for reaching out to us here in the Community, @Colorado Vintage Tools. I can share with you some troubleshooting steps so you can log in to your QuickBooks Self-Employed (QBSE) account.
If I may ask, may know the specific error message you're getting when trying to log in to your account? This way, I can look into this more closely and review any open investigation about the issue.
For now, you can perform the basic troubleshooting steps to isolate the issue. First, I recommend signing in to QuickBooks using a private browser. It's the best place to check browser-related issues while working with QuickBooks.
You can use either of these keyboard shortcuts to save you time: