When voting on different sites for questions that I'm following, I finally got an error when upvoting, saying that
Quota for the vote of question exceeded, 24 hour quota for this user is 30. I may have voted a total of 30 times since I got the app (months ago), and across different sites, but I guarantee that after a weekend of no StackExchange, I did not vote 30 times when I initially turned it on.
This works ok on voting for answers
Version 0.1.59, version 0.1.60