Help Needed: RDS Flight Simulator Stuck on Drone Physics

Hey yall, I found a new flight simulator called rds, I think the physics are good but i am not an expert. The drone sounds are awsome and freestyle was great. I don’t know if anyone here uses it but when i try to modify my drone and select apply changes it gets stuck on changing drone physics, and won’t let me even change my drone, now its useless what do i do. I tried almost everything restarting it and my computer. Please help