Hi, thanks for your interest ! Assume you are referring to the free balloon here ? https://flightsim-squadron.itch.io/flightsim-aircraft/devlog/187966/hot-air-ball...
I've also shared some troubleshooting tips here - https://flightsimsquadron.com/2020/10/22/mod-installation-troubleshooting-tips/ but will also drop you a note at the address you provided.