Yes,
in your licenses manager, there are separate keys for free and adfree widgets. Are you sure you have installed the adfree widget ?
This is how I did :
1/ Disable Free IM
2/ Delete IM directory in ray/modules / on my server
3/ Delete all IM free tables in my database
4/ Clear my cache
5/ Download the whole Ray Adfree package
6/ Upload ONLY the AdFree IM in ray/modules from disk to your server
7/ In admin panel, install the IM (you have to CHMOD some files/dir during this operation)
8/ Copy/paste you ad-free license key
9/ Delete INSTALL directory in ray/modules/im
Worked for me. I have some others problems with IM (users appear always offline) but licensing is OK.
Rayz expertz said me a patch will be release for my problem this week.
Good luck !