I woke up this morning to my site being down because the certificate has expired.
I did a ./launcher rebuild app and that renewed the certificate so at least my site is back up now, but why is the certificate not being renewed automatically?
OK, well, hopefully that was it, I’ve got a calendar alert for a few weeks before the next expiry so I’ll double check it (sadly, I had one for this expiry too but the alert was not assertive enough to get my attention!). Thanks.