Welcome to the QuickBooks Community, En_When.
Based on the information you've provided, it appears that you're encountering an error while logging in to the QuickBooks Online website as an employee. Not to worry, I am here to guide you on how to access your account smoothly.
Since you're invited as an employee to view your pay stub and W2, you may need to log in to QuickBooks Workforce. To sign in to your account, I recommend using this link workforce.intuit.com.
Once you have successfully logged in, you can easily view and print your pay stubs and W-2s online. However, if you are unable to locate some of your pay stubs in QuickBooks Workforce, you can refer to this article for guidance on what to do: Troubleshoot missing pay stubs in QuickBooks Workforce.
If you need anything else about accessing your workforce account, don't hesitate to leave a comment below. I'm always here to help.