"He is a father."
Translation:Is est pater.
"Is pater est" is correct. Report it as correct if it isn't accepted. :)
Volgav vitsenanieff nivya kevach varatsach.
"is" is not necessary. Latin does not require the subject to be given in every sentence
"Pater est" should be accepted . It doesn't need the pronoun "Is" and the verb should be at the end of the sentence/clause. "Dulce et decorum est pro patria morire" Also, the female voice in the lesson sounds like she is Irish.
You seem to be addressing the course contributors. They don't typically hang around in the learners forums and comments here do not get sent to them.
If "Is pater est" was rejected, please flag it in-lesson and report "My answer should be accepted."
Keep in mind, though, that while Latin is indeed mostly SOV, copular constructions with 3rd person pronouns are more likely to be SVC (C=complement) because "Is pater est" can also be read as "This father is."