Cannot use 123Rescue anymore

I've had my clients going to 123recue.com for years to connect.  All of a sudden they've been getting 

This site only supports PIN codes generated for enterprise companies.  I've tried lots of different combinations over the years, email them a link, have them go to http://www.logmein123.com.  They always screwed it up somehow but 123 rescue.com just worked, now they get errors and I'm back in the same problem that I beat years ago

Why O Why did this happen?