VEXnet connectivity

I see a lot of post where folks are having a similar issue as i am, but no real solution. Basically the joystick and cortex will connect for a short while (10 to 20 seconds max). The VEXnet LED will blink red on both Cortex and Joystick. Occasionally it wil come back (only for a few seconds) but usually it requires a reboot of each system. I have tried turning off wi-fi etc but to no avail. All firmware has been updated ot he latest and batteries charged.

Any ideas? competition next weekend so really want to sort this out.

Thanks

Jerry,

Have you tried mailing back your VEXnet Keys for testing?
If not, please contact support@VEXrobotics.com for further details.

-Eli