UTMBa & UTMBWiFi has a security update. Android/apple mobile devices using UTMBa or UTMBWiFi will be prompted to accept the new certificate at next logon. Clients who experience logon difficulties UTMBa or UTMBWiFi should forget the network and rejoin.
Android:(https://kb.netgear.com/28440/How-to-remove-wireless-profiles-on-Android-phone-tablets).
Open Settings on your device, and tap on the WiFI icon to access WiFi network options.
Tap and hold the WiFi network you want to delete, then select Forget Network from the menu that appears.
Apple: https://support.apple.com/en-us/HT208941
Choose Apple menu ? System Preferences, then click Network.
Select Wi-Fi in the list on the left.
Click the Advanced button.
The Wi-Fi pane shows a Preferred Networks list. ...
Click the remove button (–) beneath the list. ...
Click OK.
Click Apply.