Let's work together and get this resolved. Let's make sure of a few pieces of information that needs to be matching in order for her to view the pay stubs efficiently. The email she's using to log into Workforce needs to be the same as the one you have on file in your account. To locate this, follow the steps below.
Go to the Workerstab.
Select the Employees section.
Find the employee and then click on them.
In the "Personal Info" section, ensure the email address is correct and the same one that they are using.
If it's not the same, I'd suggest changing the email address. Afterward, you can look into this article for additional information about viewing pay stubs in Workforce.
I recommend contacting QuickBooks Workforce if the email is correct. Here's a link that can help you get in touch with them: