URL variable

Hey,

I use your plugin to access to my site with google and facebook login. Very usefull for sur.
I create some qr code with a viariable in the url (www.mywebsite/wp-login.php?redirect_to=www.mywebsite/page1?variable=…)

It works with normal connexion but with google and facebook login, it removes my variable from url.

Any solution ?

thanks