Hello,
I am finding the exact same problem with my EarFun 2's (I have two of them) as in this EarFun pro 3 thread, is there a solution?
https://community.myearfun.com/threads/earfun-audio-app-is-not-detecting-my-earfun-air-pro-3
I have tried all the same things on an iPhone, two iPads, logged in/out of app, etc.
NOTE: I have EarFun Pro 3 buds also and they actually work fine with the app. Why don't the EarFun Pro 2 work?????