[Nik 4 use in Affinity]

Is it possible to use the new Nik 4 in Affinity? I have tried adding it, But it doesn't show up

 

[How do I download my affinity to my new computer]

Thank You. I was up at the App Store, and FINALLY found where my purchases were located

[How do I download my affinity to my new computer]

I can not find how to download and install my affinity on my new Mac. It is on my old one. My account only shows some of the downloads, but NOT the one for the app