Hey,
That's some real work. Congratulations on the solid traffic!
Your story in creating Yesicon and SearchEmoji showcases the power of AI in overcoming language barriers and enhancing user experiences.
From my experience, I have learned that emojis are searched very differently depending on different language and culture. The search result also varies due to that. I think to retain that traffic, you must try to make sure that emojis searched in whatever language help user find the correct one and replicate the same meaning. Basically, a quality control check would be nice to solidify your position and user base.