seems you have changed inter_athena, char_athena , map_athena config details , recheck,
by any chance you are running a third server ? with in the same vps? if yes change ports, if you wanna use same login server , dont start login server again with the third server/second server,
First you have to run your server in screen
When you wana resume u can use screen -ls
It will show you running PID's(process) under your screen, you can select which pid you wana see/resume using
screen -r pidid