Is “aku” the root of “diakui”? Like with German “das Ich”?
My understanding is that if the object immediately follows the verb, "oleh" is not needed, so I wrote "Gelar kamu tidak diakui mereka." but it was not accepted. Am I wrong?
No, you can add oleh to passive voice, or you can throw it away.
There is no 'z' (pronounced zed) in recognised.....