Assegnate 3 su 5 stelle

What is this for? There's no such plugin for Keepass called "KeepassXC"

Questa recensione riguarda una versione precedente (1.0.3) del componente aggiuntivo. 

It's for the password manager https://keepassxc.org/
If you are using KeePass2 you can use https://keepass.info/plugins.html#keepassnatmsg