When testing SMS OTP, an error occurs on the page saying "Unable to use the selected registration method.", and the Warning.log file for the Realm contains the following error:
"The token provider cannot get tokens for target 'http://uscloud.secureauth.com/SmsService/SMS.svc/msg'".
The IdP could not communicate with the SecureAuth cloud via HTTP.
1. Open the IdP console and click on Admin Realm | SecureAuth0 Realm | System Info tab
2. Scroll down and locate "SMS Use WSE 3.0:" drop down and change its value from True to False.
3. Underneath the above drop down locate "SMS URL:" and change http to https and then take out the "msg" from the end of URL so that the URL will become "https://us-cloud.secureauth.com/smsservice/sms.svc then save the changes.