Once again I am very grateful for your attention!
I understand the problem, and I’m trying to use the solution you showed at https://github.com/joohoi/acme-dns
But now another problem has appeared, this solution needs to create an NS type record pointing to auth.polisoftware.com.br, but the interface (CPanel) of my domain controller does not give me this option. Only A, AAAA, CAA, CNAME, MX, SRV and TXT records are available.
I posted a issue on:
https://github.com/joohoi/acme-dns/issues/244
to find out if there is anything to get around this
Thank you!