Can't get serum to update

I downloaded the update but I don't know how to put the updated one in Ableton. Every time I go into it its the old one.

https://www.xferrecords.com/serum/topics/if-serum-does-not-update-or-still-shows-as-demo
Please read that and reply there with your DAW and OS if still stuck, but you shouldn't be!