The letters READYL mean your unit is not actively sending data to the GuardTrax server because someone turned on Log Mode through the device menu. 
To remove the READYL do the following: 

Hit the MENU key 
Hit ENTER 
Hit the UP ARROW until you see LOG MODE 
Hit ENTER 
Hit the UP ARROW to turn LOG MODE OFF 
Hit ENTER 

The unit should then just say READY instead of READYL. 

After you have turned Log Mode off please go to the Services Tab on the GuardTrax website and follow the instructions for upgrading your firmware so this option will be removed from your GuardTrax menu