for DSM 7.2, tested for DS920+
choose your Synology arhitecture from here: https://kb.synology.com/en-ca/DSM/tutorial/What_kind_of_CPU_does_my_NAS_have
You cand choose among foloowing models:
git clone https://github.com/gpopesc/wireguard-module-synology.git
cd wireguard-module-synology
and run as root user:
sudo sh ./install_module.sh
in case of eny errors check the screen or log.txt
restart synology if it was uninstalled first.
https://github.com/WeeJeWel/wg-easy
or