This site seems to be the old one - they don't mention their acquistion by Canva in 'About Us' section.

https://affinity.serif.com/en-us/about/

Also there is no link anywhere for downloading their products.

The current site seems to what OP has posted: affinity.studio

Strange choice to keep the old site up and running, and to complicate things the old site is the top result when searched.