Add a New Admin to UDM Pro
It's recommended to add a dedicated Admin user for spotipo access. After logging to UDM Pro, select the Users option.
Now create a new local admin, with local access only.
After creating the Admin, use the edit option and enable Unifi controller in resources.
Enable WAN access for Spotipo Servers
Go to Settings > Routing & Firewall > Firewall > WAN LOCAL in your Unifi controller interface
Click on Add a new rule, and use below settings
IPv4 Protocol: TCP
Rule Applied: Before pre-defined rules
Source: Create a new IPv4 group and use Spotipo Cloud IP addresses.
Destination : Keep it as Any
Enable Hotspot Settings to use Spotipo
Navigate to Hotspot tab on your unifi controller and use below settings
External Portal server IP 188.8.131.52
Redirect hostname: logme2wifi.com
Pre authorization access: IP 184.108.40.206
Connect Unifi UDM Pro to Spotipo Account
Now login to your spotipo dashboard and navigate to Unifi Controller tab.
Select UDM Pro.
Ensure all the points mentioned in the checkbox have been performed already.
Enter details of the UDM pro.
Login to the UDM Pro.
At step 4, select site. UDM Pro has only default site therefore select the site and press Finish.
Verify that the controller is connected by going back to the Unifi controller tab and status shows "Online".
Enable Guest Policy And test it out
Now enable Guest Policy on the WiFi Network of your choice and test out the portal by connecting a device