deez nuts

I have 4 computers: two with windows 7 and two with windows 10. The two with windows 7 download and open the bot just fine but the computers with windows 10 do not. I'll download the file and it'll ask me which app do i want to open it with and I don't know what to do from there. All four computers have the latest version of Java. I'm not overly tech savey so this is throwing me for a loop lol. I searched for previous topics but wasn't able to figure out what to do.