Вот журнал после ввода пароля:
Thu Mar 30 21:55:10 2017 library versions: OpenSSL 1.0.2k  26 Jan 2017, LZO 2.09
Thu Mar 30 21:55:32 2017 Outgoing Control Channel Authentication: Using 160 bit message hash 'SHA1' for HMAC authentication
Thu Mar 30 21:55:32 2017 Incoming Control Channel Authentication: Using 160 bit message hash 'SHA1' for HMAC authentication
Thu Mar 30 21:55:32 2017 TCP/UDP: Preserving recently used remote address: [AF_INET]46.8.255.132:443
Thu Mar 30 21:55:32 2017 Attempting to establish TCP connection with [AF_INET]46.8.255.132:443 [nonblock]
Thu Mar 30 21:55:33 2017 TCP connection established with [AF_INET]46.8.255.132:443
Thu Mar 30 21:55:33 2017 TCP_CLIENT link local: (not bound)
Thu Mar 30 21:55:33 2017 TCP_CLIENT link remote: [AF_INET]46.8.255.132:443
Thu Mar 30 21:55:33 2017 WARNING: this configuration may cache passwords in memory -- use the auth-nocache option to prevent this
Thu Mar 30 21:55:34 2017 VERIFY OK: depth=1, O=58bfed90c822c10f0cb87fa3, CN=58bfed90c822c10f0cb87fb3
Thu Mar 30 21:55:34 2017 VERIFY KU OK
Thu Mar 30 21:55:34 2017 Validating certificate extended key usage
Thu Mar 30 21:55:34 2017 NOTE: --mute triggered...
Thu Mar 30 21:55:34 2017 4 variation(s) on previous 3 message(s) suppressed by --mute
Thu Mar 30 21:55:34 2017 [58bfed91c822c10f0cb87fbe] Peer Connection Initiated with [AF_INET]46.8.255.132:443
Thu Mar 30 21:55:35 2017 AUTH: Received control message: AUTH_FAILED,CRV1:R:ff76bd8d642d446e99b3195e27147e16:bmls:Enter Pin
Thu Mar 30 21:55:35 2017 SIGUSR1[soft,auth-failure] received, process restarting

Во время установки по приведенной здесь инструкции после ввода имени и пароля, указанных на странице "Доступ к бесплатному VPN-серверу в России-2" выдается запрос "Enter Pin Response:".
Что-то не пойму, почему и откуда его брать, просветите.