Default Truenas SSL cert broken after hardware migration

I run TrueNAS Scale on a laptop. I moved it to a different better laptop. After doing this the SSL certificate of the machine, truenas_default, stopped working.
Firefox throws an self signed error and clients claim that the cert in unverifiable. This did not use to happen.

According to the dashboard the certificate was created today at 5 am. Possibly this might have lead to the error?

When connecting to the dash board no issues occur, only when connecting to nextcloud.

The setup includes a USB boot drive (i know it’s not advisable, but drive interfaces are scarce and low cost was a focus), and 2 drives mirrored in a pool.

Here I mostly run next cloud.

The dns is handled by duckDNS.

Any idea what I might do to fix the issue?

Thank you for your time