tailscale configure synology-cert does not generate a certificate

What is the issue?

I installed tailscale on my Synology NAS (DSM 7.2.2) like explained in this video: https://tailscale.com/kb/1131/synology

At 11:28 it explains how to schedule and create a tailscale certificate for HTTP access. On talescale HTTPS and MagicDNS is enabled.

But when I run that task it does not generate a certificate :-(

Is the tutorial outdated? Am I missing some necessary configuration? Or is it a bug in my version of tailscale which is 1.58.2

Steps to reproduce

see above

Are there any recent changes that introduced the issue?

no, it's a first time install

OS

Synology

OS version

DSM 7.2.2

Tailscale version

1.58.2

Other software

nothing

Bug report

No response