Good morning, @aliciamg. 

I'd like to have your employee try uninstalling the TSheets application from their phone, then reinstalling, making sure he grabs the latest version of the app.  Once this is done, he'll want to select the option to "log in with Intuit".

If he's still unsuccessful, have him head to accounts.intuit.com and verify that he's using the correct username/password.

If he's already accepted an invite successfully in the past and been able to log in, there's no need to continue to send him invites.  If the above steps prove unsuccessful, you'll need to reach out to TSheets support so they can verify his account information, and make sure that he's connected to your account correctly.

To reach support by phone you can call 1-800-4-INTUIT to speak with an agent.  Or, to chat with us, from any TSheets web page (such as tsheets.com), on the right, select the blue "Live Chat" button. This button also appears at the bottom left of your company's TSheets dashboard.

Don't worry! We'll make sure your employee gets back in asap. Take care!