Can't configure DNS for a .br domain

[Frank419]

Look at this

Unable to set nameservers: DNS query refused

Before you can add a domain name to your account, you need to point it to the InfinityFree nameservers first. However, some domain providers show an error like this when trying to change the nameservers: DNS Query Refused If that happens, your registrar will tell you that the nameservers must be configured first. What causes this issue Before you can add your domain to your InfinityFree account, you need to verify you can control the domain. The usual way to do so right now is by setting th…

@pedrozilmar

they indicated an upgrade to a paid plan with them

It is true that premium hosting allow you to add the domain without setting up the nameservers first. So it is a way.