When I open up MapleRoyals I am able to log in but as soon as I double click my character it bring me back to the log in screen and says "Unable to connect to the game server" and I also already tried the register IP button
Then your IP must have changed since you pressed the Register IP button. Try it again and then immediately go into the game
Same problem here. +can't vote. Someone told me to "flush dns". Did it (twice), nothing happened. Still same problems.
It sounds like there is an issue with the server that hosts the Vote and Register IP scripts. Please be patient until the server comes back online.