My name is***** am sorry to hear that you are having this issue.
I will be glad to assist you with this.
You will need to reset each of the Airport Express first.
Then open AirPort Utility (On a Mac, choose Go > Applications from your desktop, click the Utilities folder, then open AirPort Utility. In Microsoft Windows, choose Start > All Programs > AirPort to start AirPort Utility).
You are now ready to add extended Wi-Fi base stations to your network.
Configuring an extended Wi-Fi base station
The next window may indicate that there are some problems. Resolve the problems, then click Update.