Sorry for the trouble - I’m curious, when was the last time you rebuilt before this?
We just checked and tested the renewal process again but are unable to reproduce - our tests renew properly so either something’s not happening on our side, or there’s something different in how lets encrypt’s staging vs prod renewal works.
I can also confirm that rebuilding your site does force the renewal process to take place, if all else fails.
We use acme.sh underneath the hood (in /opt/acme.shin the container) - if you’re inclined you can enter the running docker container and run the script to inspect/renew through there as well.