LDAP (authy-openvpn-ldap) support appears to be dropped in the latest version: "PLUGIN_AUTH_USER_PASS_VERIFY failed with status 1: /usr/lib/authy/authy-openvpn.so ldap_bind with zero-length password is forbidden." It appears 2014 version of the plugin works still.
LDAP (authy-openvpn-ldap) support appears to be dropped in the latest version:
"PLUGIN_AUTH_USER_PASS_VERIFY failed with status 1: /usr/lib/authy/authy-openvpn.so
ldap_bind with zero-length password is forbidden."
It appears 2014 version of the plugin works still.