This is just a measure to communicate to our users how to behave. You don't need to write anything agreeing or disagreeing here (unless you want to). We are not asking for this, just passing on information.
Your last post agreeing to the rules was deleted by Blockio probably because they didn't understand it. Remember, just because I and a few others here understand Portuguese, it doesn't mean everyone does. Try to just use English for now.
But thanks for the feedback!

Ah ok
I'll use Google Translate more to talk

You can use a language other than English in private messages (PM), but we recommend this only when both the sender and recipient speak the same language.