You are welcome!
I learn new things every day. I will look into this, but I'm not sure if this is something I will be able to fix or even detect. It sounds like this might be a wordpress core bug of some sort, as the prefix is used as is provided from wordpress itself. Anyways I will definitely try to simulate the issue, maybe there is indeed something I can do.
I hope it's working correctly now.
If you like my products, don't forget to rate them on codecanyon :)