The lockring is a lightweight composite material which Zwift say not to over tighten, it is suggested that the new owner read the supplied booklet and maybe watch a Youtube video before fitting.
Zwift Cog V2 Multi Trainer Edition - Brand New
Zwift Cog V2 brand new in box
Zwift Cog And Click V2 - Multi-Trainer
Zwift Cog And Click Upgrade Kit V2-Multi-Trainer-lightly used
Zwift cog multitrainer freehub and Zwift click V2
Zwift Cog and Click V2 Elite Edition