Translation:Tu scrii un mesaj.
It doesnt explain why the verb is different
It doesn't tell if you have to write the singular you or the plural you
Isn't "mesaj" a feminine noun? I mean, why is "un mesaj" and not "o mesaj"??
Mesaj has the neuter gender, so it behaves as a masculine noun in singular but as a feminine noun in plural. Un mesaj, două mesaje.