Hello can someone help me with setting up openvpn ios,i've tried various tutorials and got it working with Windows but in iOS i get a error,:

TUN_SETUP_FAILED option_error: only topology 'subnet' and 'net30' supported [ERR]
2015-05-22 22:38:00 EVENT: DISCONNECTED
2015-05-22 22:38:00 Raw stats on disconnect:

I see in the miktotik log that client connects and thene disconnect

Nobody