Issue Voting is unlimited and not updating without refreshing the page

I want the voting to be limited to 1 vote per user.

Currently: It allows me to vote as many times as I want. This could get unmanageable to let users freely vote unlimited times.

I also want the voting to show up immediately in real-time.

Currently: It shows a loading graphic in the top right (see image below) and it does not update/count my vote. I have to refresh the page to see the vote count.

I tried looking at past support requests, but it's not the exact problem that I see. Can I get support for this?