Will let one of my users open accounts on phone but wont identify as user on computer??

Welcome to the Community, castile.

I'll be delighted to assist you with your concern about allowing users to access their accounts in QuickBooks Online (QBO) on some devices.

Beforehand, I'd like to clarify something regarding this matter. Are you referring to allowing users to log in or access the account only on their mobile devices? If so, this option is unavailable. As long as the user has access to the account, they will automatically have the option to open this on any device.

On the other hand, if you're referring to their desktop device being unable to recognize the credentials. You'll want to ensure they enter the correct email or password. Also, do they encounter a specific error message when attempting to do so? Otherwise, you can have them check out this article to Fix common sign-in errors in QuickBooks Online.

Additionally, here are some articles you can look for when recovering an account in QBO:

• Recover your account when you can't sign in
• Reset or change your login information for QuickBooks Online, QuickBooks Online Accountant, and QuickBooks Self-Employed

Let me know if you have more questions about accessing accounts. The Community always has your back. Have a good one!