Hey Marcus_Xia,
Being able to access QuickBooks on multiple devices with multiple users can have an incredibly positive effect on your bookkeeping. With a little bit of setup, you gain a seamless experience of working together with your team. I'm confident that a few minor changes to your user settings will resolve this error. I can guide you through this.
If you're logged in on your desktop, it's just a couple easy steps to manage user permissions:
This is the option mentioned in the message you're receiving:
Let me know how this goes! I want to make sure you unlock the power of QuickBooks on all your favorite devices.