Open DNS is not working.

[jhonnyrs_]

Microsoft Windows [versão 10.0.18362.295]
(c) 2019 Microsoft Corporation. Todos os direitos reservados.

C:\Users\jhonn>nslookup -type=txt debug.opendns.com. 208.67.220.220
Servidor: resolver2.opendns.com
Address: 208.67.220.220

Não é resposta autoritativa:
debug.opendns.com text =

"server m25.sao1"
debug.opendns.com text =

"flags 40020 0 8050 1800000000000000000039504007F40000010C3"
debug.opendns.com text =

"originid 169058800"
debug.opendns.com text =

"actype 2"
debug.opendns.com text =

"bundle 11353174"
debug.opendns.com text =

"source 177.96.170.34:49628"

C:\Users\jhonn>nslookup -type=txt which.opendns.com.
Servidor: PowerBox.home
Address: 192.168.25.1

Não é resposta autoritativa:
which.opendns.com text =

"I am not an OpenDNS resolver."

C:\Users\jhonn>nslookup whoami.akamai.net.
Servidor: PowerBox.home
Address: 192.168.25.1

Não é resposta autoritativa:
Nome: whoami.akamai.net
Address: 177.207.223.227

C:\Users\jhonn>netsh interface ipv4 show config

Can someone help me, please?

[rotblitz]

In order for OpenDNS to work for you, you must configure the OpenDNS resolver addresses 208.67.222.222, 208.67.220.220, etc. on the router (PowerBox.home, Address: 192.168.25.1), on an internal DNS server or on the end user devices.  You apparently didn't do this or did it wrong, so you're using your Brazilian ISP's (TELEFÈNICA BRASIL S.A - Vivo) DNS service, not OpenDNS.
See also http://welcome.opendns.com/

A side note, you didn't post the output of "netsh interface ipv4 show config".  But this was not relevant yet.