It won't let me add or invite them with their same email address they have to log onto QB.
I would need to add them as a new user with their personal email address instead of their company one
Thanks for actively responding, @Steve Orme1.
I understand the need to add your employees' existing email addresses with the new QuickBooks Advanced expense claim.
Since the system won't allow you to do that, I'd recommend contacting our Customer Care team. They can take a look at the issue. It could be that the employees' email addresses need to get removed and re-added to fix it.
You can also contact support directly through this link: QuickBooks Online Payroll chat.
This article will help you manage timesheets, pensions, and payroll alongside your accounts in the future: Set up guide for QuickBooks Online Advanced Payroll.
Let me know if you need more help. I'll be there to guide you in adding your employees to your QuickBooks company.