I see something working there but i believe its just temporary, he confirmed many times that the config is not working anymore and for me to wait untill they fix it.
My opinion is that he just made something to passby this situation.
I prefer my refund.
as long as the config currently works, that is sufficient. That's what you paid for.
If the config stops working within 2 weeks you can contact me again and we will determine the amount he will refund you.
Please confirm whether the config actually works or not currently.