help！help！！help！！！

Hello！
I encountered a troublesome problem while playing Path of Exile 2. Recently, I learned that there will be a built-in purple base position prompt when sending private messages on the web bazaar. However, it seems that my account does not have this function. After exhausting all my own efforts, I can only turn to you for help by sending this email. Could you please tell me how to enable this function?

By the way, using the same computer, when I logged into my friend's account to sell the same piece of equipment, he received the position prompt.

The last day has come, and I wonder if anyone can help me.