although the plugin has been updated in June - it definitely does not work with the latest version - only up to 3.1x
I did try it, it installed without a hitch, appeared to be just fine - but creating a poll is a different story - step 1 works, then clicking step 2 get's you only a perpetual waiting time that one can only get out of in closing the window. Ergo - no poll to insert.
Too bad, I wasted my time on it.