"Some older budget units such as the Hyper 212 LED, Hyper 212 EVO and Hyper 212 X will be compatible with Ryzen AM4 on the latest production model but users who have the older versions will unfortunately not be eligible for an upgrade kit."
https://www.eteknix.com/cooler-master-announces-amd-ryzen-am4-compatibility-list/
Maybe you've got an older version.