Hey there, @helpinghandsbeha. Welcome to the Community!
To better assist you, I'd like to gain some additional insight into your question. Are you referring to an employee Intuit Workforce account or another area of QuickBooks Online? Once I know more information, I can definitely point you in the right direction to reactivate their account.
In the meantime, I recommend checking out this article on setting up an employee for access to Workforce. There's also a contact link towards the bottom that you can use if you run into any account-specific questions: View your paychecks and W-2s online in QuickBooks Workforce
I'll be here for you if you still need me. Hope you have a safe rest of your week.
