Actalis is providing free 90 day certs.

The cert can only contain one domain and its www sub domain unless you have a paid account.

No wildcard certs.

acme.sh  --server actalis.com   --issue  -d example.com  -d www.example.com ........

Please register a free account at www.actalis.com, and then get your EAB Credentials:

https://guide.actalis.com/ssl/activation/acme

Next:

1. Register an account:

acme.sh  --register-account  --server actalis.com  \
             --eab-kid  xxxxxx     --eab-hmac-key  xxxxxxxx

2. Then you can issue certs with --server parameter:

acme.sh --issue  -d example.com -d www.example.com  --dns dns_cf    --server  actalis.com