Would this work if one doesn't have the pro-pack? Could you share an example of the /home/TheirUserName/.redis/redis.sock file?
The socket you are asking about is not a text file. So it is not possible to show an example of its content. DirectAdmin offers a Redis interface and manager only under Pro-pack. But if you have a custom installation of Redis then you can also configure it to place individual sockets under users' home dirs.