Find Full Text function for IEEE published paper

I have set up the Find Full Text preferences by obtaining the Open URL and URL information from the university’s library. 

But I cannot download a paper published by IEEE since October.

Is it just me? Or is it a common occurrence for others?
I wonder if the IEEE is no longer providing the original text, or is it a matter of setting up a proxy server in the school library?

Could you please advise me on this matter?