Grant Extended Permissions doesn't work

I have installed Ultimate Facebook on a client site, as well as created the app for it. I have used it before on other sites without problem, but here, the Grant Extended Permissions Tab stalls - aka I never get to actually grant extended permission, so I can't autopost to facebook...?
Live-site is: if that's any help, otherwise let me know, and I'll create a login for you...

Thank you in advance :slight_smile: