Purchase problem

Hi

i have 50$ in my apple id

i bought many chips from pokerist application store

but now i want 50$ more today and i have error please help me to buy

i dont know what is the problem

i said my problem to pokerist support and they said this :::

You are experiencing this issue because of an anti-fraud system that has been launched by Apple. To get rid of this issue with Apple, please follow our instructions: go to https://getsupport.apple.com/, allow the system to use your location, choose your device (iPhone, iPad), navigate to Subscriptions & Purchases menu, then scroll down to "The topic is not listed." Write the "Your Purchase Could Not Be Completed" description and press Go on your keyboard. Choose a communication method and send a support request to Apple.

please solve my problem