Can connect via cellular but not via wifi

unspec

Hi,

I'm using the openVPN server provided by ASUS router.

My iPhone 6 running iOS 8 and openVPN app connect quickly over cellular but over every Wi-Fi i've tried the app reports zero bytes sent and zero bytes received and times out after one minute. Here is part of the log file provided by the app. Any ideas?
Thanks
1
2015-05-23 09:28:57 Connecting to rvEDthbaguN6PsWnxqXKXEehBjreJVqQK.asuscomm.com:1194 (173.216.152.158) via UDPv4
2015-05-23 09:29:07 Server poll timeout, trying next remote entry...
2015-05-23 09:29:07 EVENT: RECONNECTING
2015-05-23 09:29:07 LZO-ASYM init swap=0 asym=0
2015-05-23 09:29:07 EVENT: RESOLVE
2015-05-23 09:29:07 Contacting 173.216.152.158:1194 via UDP
2015-05-23 09:29:07 EVENT: WAIT
2015-05-23 09:29:07 SetTunnelSocket returned 1
2015-05-23 09:29:07 Connecting to rvEDthbaguN6PsWnxqXKXEehBjreJVqQK.asuscomm.com:1194 (173.216.152.158) via UDPv4
2015-05-23 09:29:17 Server poll timeout, trying next remote entry...
2015-05-23 09:29:17 EVENT: RECONNECTING
2015-05-23 09:29:17 LZO-ASYM init swap=0 asym=0
2015-05-23 09:29:17 EVENT: RESOLVE
2015-05-23 09:29:17 Contacting 173.216.152.158:1194 via UDP
2015-05-23 09:29:17 EVENT: WAIT
2015-05-23 09:29:17 SetTunnelSocket returned 1
2015-05-23 09:29:17 Connecting to rvEDthbaguN6PsWnxqXKXEehBjreJVqQK.asuscomm.com:1194 (173.216.152.158) via UDPv4
2015-05-23 09:29:27 Server poll timeout, trying next remote entry...
2015-05-23 09:29:27 EVENT: RECONNECTING
2015-05-23 09:29:27 LZO-ASYM init swap=0 asym=0
2015-05-23 09:29:27 EVENT: RESOLVE
2015-05-23 09:29:27 Contacting 173.216.152.158:1194 via UDP
2015-05-23 09:29:27 EVENT: WAIT
2015-05-23 09:29:27 SetTunnelSocket returned 1
2015-05-23 09:29:27 Connecting to rvEDthbaguN6PsWnxqXKXEehBjreJVqQK.asuscomm.com:1194 (173.216.152.158) via UDPv4
2015-05-23 09:29:37 Server poll timeout, trying next remote entry...
2015-05-23 09:29:37 EVENT: RECONNECTING
2015-05-23 09:29:37 LZO-ASYM init swap=0 asym=0
2015-05-23 09:29:37 EVENT: RESOLVE
2015-05-23 09:29:37 Contacting 173.216.152.158:1194 via UDP
2015-05-23 09:29:37 EVENT: WAIT
2015-05-23 09:29:37 SetTunnelSocket returned 1
2015-05-23 09:29:37 Connecting to rvEDthbaguN6PsWnxqXKXEehBjreJVqQK.asuscomm.com:1194 (173.216.152.158) via UDPv4
2015-05-23 09:29:47 EVENT: CONNECTION_TIMEOUT [ERR]
2015-05-23 09:29:47 EVENT: DISCONNECTED
2015-05-23 09:29:47 Raw stats on disconnect:
BYTES_IN : 943025
BYTES_OUT : 193708
PACKETS_IN : 1630
PACKETS_OUT : 1510
TUN_BYTES_IN : 120126
TUN_BYTES_OUT : 1351776
TUN_PACKETS_IN : 1222
TUN_PACKETS_OUT : 1405
NETWORK_SEND_ERROR : 1
RESOLVE_ERROR : 16
TRANSPORT_ERROR : 1
KEEPALIVE_TIMEOUT : 1
CONNECTION_TIMEOUT : 1
N_PAUSE : 4
N_RECONNECT : 30
PKTID_UDP_REPLAY_WINDOW_BACKTRACK : 1
2015-05-23 09:29:47 Performance stats on disconnect:
CPU usage (microseconds): 834350
Tunnel compression ratio (uplink): 1.61254
Tunnel compression ratio (downlink): 0.697619
Network bytes per CPU second: 1362417
Tunnel bytes per CPU second: 1764130
2015-05-23 09:29:47 EVENT: DISCONNECT_PENDING
2015-05-23 09:29:47 ----- OpenVPN Stop -----

Traffic

unspec wrote2015-05-23 09:29:07 EVENT: RESOLVE
2015-05-23 09:29:07 Contacting 173.216.152.158:1194 via UDP
2015-05-23 09:29:07 EVENT: WAIT
2015-05-23 09:29:07 SetTunnelSocket returned 1
2015-05-23 09:29:07 Connecting to rvEDthbaguN6PsWnxqXKXEehBjreJVqQK.asuscomm.com:1194 (173.216.152.158) via UDPv4
2015-05-23 09:29:17 Server poll timeout, trying next remote entry...
2015-05-23 09:29:17 EVENT: RECONNECTING

Your server does not respond .. check your firewalls.