I had the same problem on all my sites using any desktop browser. (so no update to the plugin has fixed the issue)
The only way I was able to get through, was by using Safari on my iPad. Only then did I get a response when clicking the button to review.
+!
The ability to simply specify a url or url set for exclusion would be greatly appreciated.
Not sure how this is resolved, but I have the same issue.
After clicking import, I get no feedback, no import, nothing.
Anyone have any answers?
thanks