I use CI to compile the page and add it to nginx, which I then build into a docker container. Once it's finished, I deploy it to my server and it gets served by traefik.
That's another thing I was curious about. Is there a reason why you didn't use docker?
You mentioned in another comment, that you used snap, because it is used in the official certbot instructions. Did you intend this to be 100% faithful to official docs?
Account > gear icon / settings > User/Community/Instance Blocks > Instances
You can manage your blocked instances there.