Jaderaid

Hi, I had a question, i'm not angry or anything just wanting to figure out what happened and whats going on. My boyfriend has a sever and it seems, like after many hours of troubleshooting, only one of our computers is able to be logged into the sever. If i'm in the server he can't log in, if hes logged in and i'm jumping onto the server he will get kicked off. I'm not sure what is going on due to not being very tech savy. We have tried jumping onto another server and both of us are able to log on. It totally could be and error on our side. I would just like to find a solution.Thank you thank you. GAME SERVER ID #36361