Doesn't make sense.
If everything is working....
Can you post the log for the wifi setup?

Opening Serial Port...
Connected to serial port COM3
> $$$
< CMD
> ls
< ls
<
< FL# SIZ FLAGS
< 2 79680 3 WiFly_GSX-2.36
< 22 1052 10 config
< 23 1052 10 user
< 24 88548 3 NO NAME
< 25 88548 3 wifly-GSX-441-r1057
< 34 83648 3 WiFly_GSX-2.45
< 79 46632 3 wps_app-GSX-131
< 80 66240 3 eap_app-GSX-101
> load user
< 81 74920 3 web_app-GSX-106
< 82 37282 0 web_config.html
< 83 512 0 link.html
< 84 7268 0 logo.png
<
< 107 Free, Boot=25, Backup=24
< <4.41>
< load user
< AOK
< <4.41>
> save
< save
< Storing in config
< <4.41>
> save
< save
< Storing in config
< <4.41>
> set o d ReefAngelWifi
< set o d ReefAngelWifi
< AOK
< <4.41>
< set w l 5
> set w l 5
< AOK
< <4.41>
> set w s iBall-Baton$1
< set w s iBall-Baton$1
< AOK
< <4.41>
> set w p @9224284117@9004077372@
< set w p @9224284117@9004077372@
< AOK
< <4.41>
> set w k 00000000000000000000000000
< set w k 00000000000000000000000000
< AOK
< <4.41>
> set ftp address 198.175.253.161
< set ftp address 198.175.253.161
< AOK
< <4.41>
> save
< save
< Storing in config
< <4.41>
> reboot
< reboot
> $$$
< CMD
< DHCP in 5378ms, lease=604800s
< IF=UP
< DHCP=ON
< IP=192.168.1.100:2000
< NM=255.255.255.0
< GW=192.168.1.1
< Listen on 2000
> show n
< show n
< SSid=iBall-Baton 1
< Chan=9
< Assoc=OK
< Rate=12, 24Mb
< Auth=OK
< Mode=MIXED
< DHCP=OK,renew=453600
< Boot=5439
< Time=FAIL
< Links=1
< <4.41>
> get i
< get i
< IF=UP
< DHCP=ON
< IP=192.168.1.100:2000
< NM=255.255.255.0
< GW=192.168.1.1
< HOST=198.171.134.6:80
< PROTO=TCP,
< MTU=1524
< FLAGS=0x6
< TCPMODE=0x0
< BACKUP=0.0.0.0
< <4.41>
> reboot
< reboot
Removing connection to COM3
---------------------------------------------------------------------
Your Reef Angel Wifi Attachment is now configured with the settings provided.
---------------------------------------------------------------------

If the blue LED is still blinking, it means that the Reef Angel Wifi Attachment could not connect to your wifi network.

Found router iB-WRB300N

Port 2000 is now being forwarded to 192.168.1.100

Yeap. If RA is working and wifi attachment is working, it can only be the cable.

check the attach pic for wiring diagram
still not working
getting error 13: No route to host

Are you sure you didn't change the code?

code was change 1 week before but it was working fine
how to check if controller is sending data to wifi attachment in serial monitor

Open serial monitor at 57600 baud.
Then, manke sure you have Both CR and LF.
Type "GET / HTTP " and click send.

unabe to upload code now

The following features were automatically added:
Watchdog Timer
Version Menu

The following features were detected:
Simple Menu
Binary sketch size: 28,296 bytes (of a 258,048 byte maximum)
C:\Program Files (x86)\Reef Angel Controller\hardware/tools/avr/bin/avrdude -CC:\Program Files (x86)\Reef Angel Controller\hardware/tools/avr/etc/avrdude.conf -v -v -v -v -patmega2560 -cstk500v2 -P\\.\COM3 -b115200 -D -V -Uflash:w:C:\Users\MAYUR\AppData\Local\Temp\build1336863122691777432.tmp\InitialInternalMemory.cpp.hex:i

avrdude: Version 6.0, compiled on Apr 6 2012 at 19:29:19
Copyright (c) 2000-2005 Brian Dean, http://www.bdmicro.com/
Copyright (c) 2007-2009 Joerg Wunsch

System wide configuration file is "C:\Program Files (x86)\Reef Angel Controller\hardware/tools/avr/etc/avrdude.conf"

Using Port : \\.\COM3
Using Programmer : stk500v2
Overriding Baud Rate : 115200
Rebooting Reef Angel Controller
avrdude: Send: . [1b] . [01] . [00] . [01] . [0e] . [01] . [14]
avrdude: Recv:
avrdude: stk500v2_ReceiveMessage(): timeout
avrdude: stk500v2_getsync(): timeout communicating with programmer

avrdude done. Thank you.

got this in serial monitor

HTTP/1.1 200 OK
Server: ReefAngel
Cache-Control: no-store, no-cache, must-revalidate
Pragma: no-cache
Access-Control-Allow-Origin: *
Access-Control-Allow-Methods: GET
Connection: close
Content-Type: text/html
Content-Length: 41

<h1>Reef Angel Controller Web Server</h1>

That means the controller is sending data to WiFi attachment.
I'm at a loss why it is not working.
All pieces are working correctly.