Why isn't my store allowing shipping to the United States?

Hi everybody

Myself Hasnaat and I created my shopify store and the shopify store name is ANYTIMEBUY .

IM FROM PAKISTAN SO WHEN I CREATE THIS ACCOUNT IT WORKED WELL AND I GOT MY FIRST SALE IN 10 DAYS. AND NOW I CONNECT MY LLC TO MY SHOPIFY STORE AFTER CONNECTING MY LLC TO MY STORE I FOUND A PROBLEM WHEN MY CUSTOMER WANTS TO PURCHASE SOMETHING FROM MY STORE, IN THE END, IT’S HOW THIS STORE IS NOT ALLOW SHIPPING IN YOUR COUNTRY. EVEN MY 5 CUSTOMERS THAT WANT TO ORDER SOMETHING FROM MY STORE ARE ALL LIVING IN UNITED STATES.

AND EVEN THOUGH I ALREADY DELEIVER 10 ORDERS IN THE UNITED STATES COUNTRY BEFORE CONNECTING THE LLC, AND AFTER ATTACHING MY LLC IT CREATE A SHIPPING PROBLEM, IM VERY UPSET

PLEASE HELP ME GUYS