Another Fb connect issue

Hello everyone, I'm having trouble with FB connect. i'm following the instructions i found in these forums to a tee. But when i put my domain name in the Fb app on Fb and hit the save button, It keeps telling me this

• App domains must match the domain of the Secure Canvas URL, Mobile Site URL, Unity Binary URL, Site URL or Secure Page Tab URL. Please correct these domains:www.Alloutrivals.com . I have tryed the direct path also with the same resualts.
• What am i missing here?    
• thanks for any responces in advance

This is the link to the instruction page i'm using

https://www.boonex.com/forums/topic/How-to-setup-Facebook-Connect-module.htm

I would suggest to check if domain you've entered match your site domain. Make sure that protocol (http or https) match and domain is entered with or without www.

Thank you for your input on this matter. it took me a few to figure out what was going on. in the FB connect app when you create an app there was two options. one was a green create app button and there is a blue one. I kept having trouble with the green  so i decided to try the blue button option. This opened up the quick create an app and from there on out i followed all directions and now up and running.