Heytaxi application not working

the application I get from here does not work, the seller who sells also does not answer what should i do


The same thing happened to me, I bought the app and it never worked.
I even paid him for the creator to install his system in my vps and I cannot do it, he did not give me a refund either, a total scam, with the same system he did another scam with another user, I only modified a little and republished it.