Let'sEncrypt обманул с датой отключения ACMEv1?
Не обманул  We will be beginning brown-outs for new ACME v1 registrations for the production environment for the following dates of this year:
October 10th to October 11th
October 16th to October 18th
October 31st onward 
Ждите 19-го.
Да и скрипты должны быть совместимы с новым клиентом
https://community.letsencrypt.org/t/end-of-life-pl... читать третий по счёту пост