It seems that you're using an outdated browser. Some things may not work as they should (or don't work at all).
We suggest you upgrade newer and better browser like: Chrome, Firefox, Internet Explorer or Opera

Buying the game on gog gives separate leaderboards to buying it on steam, and these ones don't have inbuilt replay functionality.
Not sure if there is anything that can be done about it, but it just seems really weird to me.
No posts in this topic were marked as the solution yet. If you can help, add your reply