Error: Using CA: https://acme.zerossl.com/v2/DV90 Create account key ok. No EAB credentials found for ZeroSSL, let`s get one Usage: _hmac hashalg secret [outputhex] Registering account: https://acme.zerossl.com/v2/DV90 Register account Error: {"type":"urn:ietf:params:acme:error:malformed","status":400,"detail":"[External Account Binding] The JWS Signature MUST be present"} Please add `--debug` or `--log` to check more details. See: github.com

Reason: The acme.sh changed default CA to ZeroSSL on August 2021

You can resolve this by requesting ZeroSSL support for account creation. Also on the official ZeroSSL website you can create an account and generate a free ssl without the need for shell commands.

But if you want to continue with Let’s encrypt as before here is the solution:

acme.sh --set-default-ca --server letsencrypt