Gan ane mau tanya ini maksudnya apa ya?

"To help protect users of the Community Market from fraudulent buyers and sellers, we require that users have made any purchases on Steam in the last year, the first of which must've occured more than 30 days ago. Your account does not meet these criteria."

Bahasa inggris ane cupu gan?
Ane mau sell item di steam, tapi gak bisa, karena belum memenuhi kriteria diatas katanya.