I don't think this issue for me was because of single / dual ssid but due to a saved network.
The following steps solved this issue for me.
1. Click on WiFi-Settings
2. Forget the network
3. Go to the "Saved Networks" section , which shows the networks previously saved but not active currently i guess. If there are any entries with the same SSID as the network you are connecting to, forget/delete that.
4. Go back till you reach the clearpass quickconnect page and the prompt should go away and provision your device.
Let me know if there are any confusion with the steps, the steps are for Nokia 6.1 plus (X6) running android 8, but I guess should be similar for most android devices.