Hey,
I purchased this today. I am having some bug issues.
After answering a poll on the wall, it removes the poll and replaces it with first poll question and an error saying 'you cannot view the poll results until its closed'. I am assuming, the error is from the Poll setting and shows because I already answered the first poll.
On refreshing, the other polls show up again and can be answered again. If I go to the topic of the poll and answer it there then it shows up as answered on the wall.