As of January 1st, 2017, Telesign has retired support for the SOAP API endpoint https://api.telesign.com.
Due to this change, Password Manager 5.6.2 and previous will not be able to authenticate to Telesign for phone-based and SMS verification.
TeleSign retired support for the SOAP API endpoint January 1, 2017.
Telesign REST API endpoint http://rest.telesign.com is supported in Password Manager 5.6.3.
A hotfix is available for Password Manager 5.6.2 here:
NOTE: For versions prior to 5.6.2, please upgrade to 5.6.3.