How to Solve Xhorse App Bind Device Params Error?

Problem:

Tried to bind Xhorse Dolphin XP005L key cutting machine with Xhorse App. But App displayed a Params error: nation-code. How to fix it?

Solution:

Do the following:

In Xhorse App, go to Account. Register an Xhorse account and login.

After login Xhorse account, select Combine device.

Choose Combine device and check the device you have combined.