My home iMac runs El Capitan. Log Me In updated and now I can't log in from that iMac.

Is there a way to install an older version of Log Me In so I may continue to use my older home iMac running El Capitan? I don't know if I ran an update, or not. But, the iMac cannot be upgraded to use the next Mac OS and the newest LogMeIn won't run on El Capitan.