Wifi not connecting after adding 7 addresses

Hello,

i have bsnl broadband connection and wifi modem. i have added 5 mac address of my mobile but when i add 2 more mobile mac address wifi is not working. it only showing connecting and connecting. all other mobiles are working fine but few are not connecting to wifi. when i add current mobile first time it was working fine with wifi but now it was not working pleas help.

thanks
deepak N