"Attente de la réponse du serveur" sur OpenVPN

J'ai créé un VPN avec OpenVPN sur mon Rapsberry Pi 3 (Ubuntu Mate) avec ce tutoriel : http://readwrite.com/2014/04/10/raspberry-pi-vpn-tutorial-server-secure-web-browsing . Mais quand j'essaie de connecter mon ordinateur sur mon VPN avec Tunnelblick, j'ai cette erreur :

Voici le fichier journal :

2016-12-18 21:48:55 us=588356 Current Parameter Settings:
2016-12-18 21:48:55 us=588588   config = '/.../config.ovpn'
2016-12-18 21:48:55 us=588603   mode = 0
2016-12-18 21:48:55 us=588613   show_ciphers = DISABLED
2016-12-18 21:48:55 us=588623   show_digests = DISABLED
2016-12-18 21:48:55 us=588632   show_engines = DISABLED
2016-12-18 21:48:55 us=588641   genkey = DISABLED
2016-12-18 21:48:55 us=588651   key_pass_file = '[UNDEF]'
2016-12-18 21:48:55 us=588661   show_tls_ciphers = DISABLED
2016-12-18 21:48:55 us=588670 Connection profiles [default]:
2016-12-18 21:48:55 us=588683   proto = udp
2016-12-18 21:48:55 us=588693   local = '[UNDEF]'
2016-12-18 21:48:55 us=588703   local_port = 0
2016-12-18 21:48:55 us=588712   remote = 'MYIP'
2016-12-18 21:48:55 us=588722   remote_port = 1194
2016-12-18 21:48:55 us=588731   remote_float = DISABLED
2016-12-18 21:48:55 us=588741   bind_defined = DISABLED
2016-12-18 21:48:55 us=588750   bind_local = DISABLED
2016-12-18 21:48:55 us=588760   connect_retry_seconds = 5
2016-12-18 21:48:55 us=588769   connect_timeout = 10
2016-12-18 21:48:55 us=588778 NOTE: --mute triggered...
2016-12-18 21:48:55 us=588799 255 variation(s) on previous 20 message(s) suppressed by --mute
2016-12-18 21:48:55 us=588812 OpenVPN 2.3.12 x86_64-apple-darwin [SSL (OpenSSL)] [LZO] [PKCS11] [MH] [IPv6] built on Nov 17 2016
2016-12-18 21:48:55 us=588830 library versions: OpenSSL 1.0.2j  26 Sep 2016, LZO 2.09
2016-12-18 21:48:55 us=589832 MANAGEMENT: TCP Socket listening on [AF_INET]127.0.0.1:1339
2016-12-18 21:48:55 us=589940 Need hold release from management interface, waiting...
2016-12-18 21:48:55 us=998065 MANAGEMENT: Client connected from [AF_INET]127.0.0.1:1339
2016-12-18 21:48:55 *Tunnelblick: openvpnstart starting OpenVPN
2016-12-18 21:48:56 *Tunnelblick: Established communication with OpenVPN
2016-12-18 21:48:56 *Tunnelblick: Obtained passphrase from the Keychain
2016-12-18 21:48:56 us=15623 MANAGEMENT: CMD 'pid'
2016-12-18 21:48:56 us=15778 MANAGEMENT: CMD 'state on'
2016-12-18 21:48:56 us=15946 MANAGEMENT: CMD 'state'
2016-12-18 21:48:56 us=16068 MANAGEMENT: CMD 'bytecount 1'
2016-12-18 21:48:56 us=16155 MANAGEMENT: CMD 'hold release'
2016-12-18 21:48:56 us=16395 NOTE: the current --script-security setting may allow this configuration to call user-defined scripts
2016-12-18 21:48:56 us=37387 MANAGEMENT: CMD 'password [...]'
2016-12-18 21:48:56 us=37565 WARNING: this configuration may cache passwords in memory -- use the auth-nocache option to prevent this
2016-12-18 21:48:56 us=38716 Control Channel Authentication: tls-auth using INLINE static key file
2016-12-18 21:48:56 us=38788 Outgoing Control Channel Authentication: Using 160 bit message hash 'SHA1' for HMAC authentication
2016-12-18 21:48:56 us=38840 Incoming Control Channel Authentication: Using 160 bit message hash 'SHA1' for HMAC authentication
2016-12-18 21:48:56 us=38914 LZO compression initialized
2016-12-18 21:48:56 us=39034 Control Channel MTU parms [ L:1558 D:1184 EF:66 EB:0 ET:0 EL:3 ]
2016-12-18 21:48:56 us=39119 Socket Buffers: R=[196724->196724] S=[9216->9216]
2016-12-18 21:48:56 us=39180 Data Channel MTU parms [ L:1558 D:1450 EF:58 EB:143 ET:0 EL:3 AF:3/1 ]
2016-12-18 21:48:56 us=39241 Local Options String: 'V4,dev-type tun,link-mtu 1558,tun-mtu 1500,proto UDPv4,comp-lzo,keydir 1,cipher AES-128-CBC,auth SHA1,keysize 128,tls-auth,key-method 2,tls-client'
2016-12-18 21:48:56 us=39289 Expected Remote Options String: 'V4,dev-type tun,link-mtu 1558,tun-mtu 1500,proto UDPv4,comp-lzo,keydir 0,cipher AES-128-CBC,auth SHA1,keysize 128,tls-auth,key-method 2,tls-server'
2016-12-18 21:48:56 us=39340 Local Options hash (VER=V4): '272f1b58'
2016-12-18 21:48:56 us=39392 Expected Remote Options hash (VER=V4): 'a2e63101'
2016-12-18 21:48:56 us=39444 UDPv4 link local: [undef]
2016-12-18 21:48:56 us=39496 UDPv4 link remote: [AF_INET]myip:1194
2016-12-18 21:48:56 us=39561 MANAGEMENT: >STATE:1482094136,WAIT,,,
2016-12-18 21:48:56 us=39689 UDPv4 WRITE [42] to [AF_INET]myip:1194: P_CONTROL_HARD_RESET_CLIENT_V2 kid=0 pid=[ #1 ] [ ] pid=0 DATA len=0
2016-12-18 21:48:58 us=416600 UDPv4 WRITE [42] to [AF_INET]MYIP:1194: P_CONTROL_HARD_RESET_CLIENT_V2 kid=0 pid=[ #2 ] [ ] pid=0 DATA len=0
2016-12-18 21:49:03 us=192515 UDPv4 WRITE [42] to [AF_INET]myip:1194: P_CONTROL_HARD_RESET_CLIENT_V2 kid=0 pid=[ #3 ] [ ] pid=0 DATA len=0
2016-12-18 21:49:11 us=502022 UDPv4 WRITE [42] to [AF_INET]myip:1194: P_CONTROL_HARD_RESET_CLIENT_V2 kid=0 pid=[ #4 ] [ ] pid=0 DATA len=0
2016-12-18 21:49:27 us=831284 UDPv4 WRITE [42] to [AF_INET]myip:1194: P_CONTROL_HARD_RESET_CLIENT_V2 kid=0 pid=[ #5 ] [ ] pid=0 DATA len=0

Voici le fichier de configuration :

local 192.168.1.21
dev tun
proto udp 
port 1194
ca /etc/openvpn/easy-rsa/keys/ca.crt
cert /etc/openvpn/easy-rsa/keys/NissaVPN.crt 
key /etc/openvpn/easy-rsa/keys/NissaVPN.key
dh /etc/openvpn/easy-rsa/keys/dh2048.pem 
server 10.8.0.0 255.255.255.0
ifconfig 10.8.0.1 10.8.0.2
push "route 10.8.0.1 255.255.255.255"
push "route 10.8.0.0 255.255.255.0"
push "route 192.168.1.21 255.255.255.0" 
push "dhcp-option DNS 192.168.1.1" 
push "redirect-gateway def1"
client-to-client
duplicate-cn
keepalive 10 120
tls-auth /etc/openvpn/easy-rsa/keys/ta.key 0
cipher AES-128-CBC
comp-lzo
user nobody
group nogroup
persist-key
persist-tun
status /var/log/openvpn-status.log 20
log /var/log/openvpn.log
verb 1

Voici la clé RSA par défaut :

client
dev tun
proto udp
remote MYIP 1194
resolv-retry infinite
nobind
persist-key
persist-tun
mute-replay-warnings
ns-cert-type server
key-direction 1
cipher AES-128-CBC
comp-lzo
verb 1
mute 20

Voici le fichier openvpn firewall :

#!/bin/sh
iptables -t nat -A POSTROUTING -s 10.8.0.0/24 -o eth0 -j SNAT --to-source 192.168.1.21

Que puis-je faire pour le réparer ? J'ai désactivé mon pare-feu et mon routeur est configuré.