While working on my app, I actually figured out a workaround to implement pair go feature for it, with the help of two bot accounts.
The idea is quite simple, the game will be created between the two bots, and moves played in the app will be forwarded to the bot to play. This way the app can enforce the correct player each turn.
I have even done some testing and it is technically possible. The biggest roadblock is that I have to finish the app first 
; and I’m still not sure if it is a good idea to implement this feature, it feels a bit too gimmicky and weird.