It is impossible for an EZ-B to change its MAC address. they are burned into the WiFi chip.

Go back to basics. Reset one of the EZ-B's and try to connect in AP mode (without your router) to start troubleshooting. More than likely something changed in the MAC address filtering settings on your router.

(maybe change your Router's password, the hackers may be at it again....).

Alan

i try that

stay desame it goes green few sec later red

Make sure your batteries are charged, and go back through the tutorial again (I know, you have done them a dozen times, but you said yourself several times your memory is not good, so just work it through one step at a time).

Work on just getting one device to work in AP mode, then see if you can get it back connected to your router in client before working on the next one.

Alan

its only the new one i cant connect.no matter what i try.

not working.not in api or client yesterday the server fell out a few houres,i think its the engenius router. and i cant fix that.i really start to hate this and the words on the ezb.

Just a thought to see if the EZ-B is okay. Can you connect it and use a mobile app project on your iPhone? Remember, using AP mode doesn't use your router.

no i cant connect not one of them.but i try the ap