I have tested Digital Input Rules on the latest FW and everything is working.
Are you only having problems with Wifi On/Off rules? Try configuring other rules.
You could restore your device to factory defaults (System->Administration->Restore) and try re'configuring it. Make sure your rules are enabled.
If the problem still remains, please send me troubleshoot file (System->Administration->Troubleshoot)->Download) via private message.
Best of Luck,