Enter 617 instead of 911 to be able to enter the serial number and to your REGISTRATION number you must add 100 to it to make it valid. If it was 9678654 now it's 9678754.
v4.1.1
To register Realmz enter 911 as Registration Code in the About Box and click on Register. Then you will be asked for a Serial Number, which is 1794683670. After this enter 1121677394 as Registration Code, click on Register, type in a name of your choice and you are done.
v3.1
To register Realmz enter 911 as Registration Code in the About Box and click on Register. Then you will be asked for a Serial Number, which is 13579246. After this enter 8487119 as Registration Code, click on Register, type in a name of your choice and you are done.