Got a Netgear wifi extender but my current password won't work to access the new_ext network.......don't know what to do!

You will need to reconfigure your extender, check the manual or online at the link bellow.
Since your extender is not working your range is diminished.
WiFi Range Extenders

In brief, all you need to do is to set your extender the same way your router is set, including WiFi IP, security type, wireless channel, password, radio type. You need to know your access IP by using network cable plugged into your extender to program it. Search the Internet for a manual. It should not take more that 5 min to do.

Hi there! Please note that the Tenda 150mbps Wireless Range Extender A3 uses a default IP address of 192.168.0.254 - you must set your IP address to the 192.168.0.* range (* = any number between 2 and 253) to login.

The default access username / password (if required) are admin and admin.

Once you've logged in, you can configure the access point to route through your existing wireless router as the default gateway (eg. if your wifi router is 192.168.1.1, then you would route through that, and set your Repeater (Extender) IP to 192.168.1.2 so that you can connect to it and then "relay" your connection through the repeater. It doesn't mirror the connection details for the existing wifi router, it simply creates an "additional" access point to connect through to your existing wifi router - creating a bridge, essentially.

The extender can be linked to the existing wifi router via LAN cable or WDS. For WDS, you will need to set the IP's 1 digit apart in the last segment (see above IP difference), and switch them both in the Wireless menu to ""Wireless Networking Mode: Network Bridge (WDS), but the SSID must remain the same (eg. "Tenda1") for both of them (it doesn't cause a network loopback), and any wireless security authentication must be identical (password / pass phrase / key + encryption algorithm) on both devices. Again, as with the above point, remember to set the gateway of the extender / repeater to that of the primary WiFi router.

For extra information and disambiguation (if required), see the following page, and scroll down: http://www.enjoypad.com/wireless-access-point/96-tenda-...

Try using the same security settings as your existing network by selecting the "Use the same security mode" check box when setting the your extender.

1. Plugin your extender in electrical outlet.
2. Place your extender near your router when first time your are setting new extender.
3. Launch any web browser and enter mywifiext.net. The New Extender Setup page displays.
4. In the Password section, type the existing WiFi network password. Default user name is admin and password is password.
   

5. Click continue and a message box displays saying that your extender is connected to the new extender WiFi network
6. Now, you can connect your device to the extender network, go to the WIFI settings and connect to the extender's new network.
7. Netgear EX6100 Setup is successfully completed now place the extender at the desired location and enjoy seamless Connectivity.

Once the range extender is in "discover" mode it will find your existing wireless network. It will then take the name of it and add '_ext' to it. giving you a second wireless network. For instance, if your wireless network was called my-house, the extender would create one called my-house_ext.

1. username should be admin and the password is password

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