Go to https://www.ui.com/download/unifi/unifi-cloud-key-gen2/default/unifi-network-controller-51423-windows and download the exe file
Create a shared mailbox or use an existing email like [email protected]
go to https://account.ui.com/ and Create a UI Account
Go to your email and Verify the account.
Open the "Unifi" icon on the desktop and click on "Launch a Browser to Manage the Network"
Download and update the controller.
Close the UniFi Controller, and browser and run the upgrade. (most likely you have to download and install jdk-11.0.18+10)
Open the "Unifi" icon on the desktop and click on "Launch a Browser to Manage the Network"
Click to Update
Make sure it is at 2.4 GHz and 5GHz is not selected
For Guest select Guest Hotspot.