I have not had the chance to review your post fully and confirm. There is a chance that your results today are related to load issues Let’s Encrypt is experiencing. We have asked subscribers to renew approximately 3 million certificates in preparation for revocations related to 2020.02.29 CAA Rechecking Bug
Hopefully, someone with more certbot knowledge will be able to help you out soon. Thanks for your patience while we respond to the influx of help requests on the forum today.