Uh sorry
I've looked deeply and actually this needs modification
The plugin in the way it works looks for the validation code from user input on validation, this is the reason it won't work without validation
I've edited for you and send you PM with modified version.
Cheers,
Boris
Facebook, Twitter and Google+ Auth for GLinks and GCommunity | reCAPTCHA for GLinks | Free GLinks Plugins

I've looked deeply and actually this needs modification

The plugin in the way it works looks for the validation code from user input on validation, this is the reason it won't work without validation

I've edited for you and send you PM with modified version.
Cheers,
Boris
Facebook, Twitter and Google+ Auth for GLinks and GCommunity | reCAPTCHA for GLinks | Free GLinks Plugins