file is present all subsequent certificate operations will use ZeroSSL instead of LetsEncrypt (renewal, new certs, revocation, etc.). If the file is removed it will start using LetsEncrypt again.
glad to hear that. Before your last message I have already started a reply stating that it MUST work with ZeroSSL
and the issue is probably that LetsEncrypt certs are still present.
OK we will start working on making LetsEncrypt vs ZeroSSL choice a proper DA feature. Right now it is not user-friendly enough. Hopefully our changes
will get accepted into upstream lego
repo and we will not have to maintain separate fork.