The only way to connect with AMS service is to bind with each IFP devices.
1. Launch Account Setting app on the IFP
2. Enable Multi Account Mode
3. The IFP will lead to the login page
4. Log into the IFP with the IFP local admin account
5. Launch Account Setting app on the IFP
6. Enable Active AMS Service
7. An Active AMS Service prompt will appear
8. Log in with AMS admin account
9. The IFP will now be bound to the organization
Please check more details in AMS user manual.