[carsafety]

I'd submit a support ticket since they said they do not provide support through this forum in the original post.

If you are using their RA module for forum integration, you need to setup the usergroups for admin access in the global config file (step 3 in the readme for this script). You shouldn't need to add users in the addonchat panel at all. Then whenever a forum admin logs in through the forums or directly, they should automatically get chat room admin, too. This works on mine, so definitely do a support ticket if yours doesn't. If you spent $80, it looks like that is the Professional version. I think you need to spend another $25 for the Remote Authentication module to use this script with that version as per requirements in the first post.

If you haven't done the integration with this script, I'm not sure how it works, sorry.