Hi nostr:npub1qdsjkr46urkg6vqrr3zqhgy8l7dazc5k9hlm5jmwqg0vft7hzgtqamgfw3 The translation feature only activates for languages that are not configured as a preferred language in iOS.

You can check and modify your preferred language settings in the iOS settings app > General > Language & Region > Preferred Languages

I believe it’s possible that adding an international keyboard might have also added that language as a preferred language automatically, but you should be able to tweak those iOS settings independently (e.g. I have a Japanese keyboard on mine, but I have removed Japanese from my preferred languages list)