whenever I or my friend tries to create a party server replies
Recieved a packetbserver side with an invalid ID: betterquesting:party_action
and we cant claim rewards either(modpack:GT new horizons)

I'm currently only doing support for the BQ3 builds in 1.12.2. GT New Horizons was developed on the older BQ2 code in 1.7.10 so this will likely not get fixed any time soon, sorry.