Ride

So I've been looking and looking for anything that can help me with this but I've found absolutely nothing, I've set ResetID's I've looked at player.dbs and nothing has helped me so I'll post here. I set up a modded server and after around 5 hours of constant troubleshooting I finally was able to get the server running and joinable. Lo and behold when someone leaves and rejoins their character is gone and they have to make a new one each time they join. I'm hoping to get a response here because I'm honestly stumped and very upset.