Can't vote more than once without reloading the page

Hi,

I can see this is a long shot since many tickets are not answered, but I thought I should give it a try. Everything is working fine, but then need the voter to vote more than once in case he changed his mind. Changed all the settings and tried, but you can only vote again if you refresh the page. Honestly I tried scavenging the code, but it is too much for my limited knowledge so, how can I make more than one vote without having to refresh the page once again??? All settings are fine, checked img by img in gallery management.

https://www.ads-software.com/plugins/nextgen-gallery-voting/